PHIL 347 Exam 1: Critical Reasoning - Updated and Latest
Questions and Correct Answers with Rationale
1. Which of the following best describes the primary goal of an argument in the context of critical
reasoning?
A. To provide reasons for accepting a specific conclusion as true.
B. To explain the causes of a specific event or phenomenon.
C. To summarize various viewpoints on a controversial topic.
D. To describe the characteristics of a physical object or concept.
Correct Answer: A
Rationale: Critical reasoning defines an argument as a set of statements designed to support a
conclusion. Unlike an explanation which clarifies ‘how’ or ‘why’ something happened, an argument
attempts to prove ‘that’ something is so. The premises act as the evidence while the conclusion is the
claim being supported. Distinguishing between persuasion and description is essential for logical
analysis. This distinction allows thinkers to evaluate the strength of the support provided for a claim.
2. In logical terms, what is an ‘enthymeme’?
A. An argument with an unstated premise or conclusion.
B. A deductive argument that is both valid and sound.
C. An argument that contains a logical fallacy.
D. A statement that is true by definition alone.
Correct Answer: A
Rationale: An enthymeme is an argument where one or more components are left implicit because they
are assumed to be understood. This structure is common in everyday discourse where speakers rely on
,shared knowledge. Identifying hidden premises is crucial for standardizing an argument for evaluation.
Without uncovering these missing links, the logical validity of the claim cannot be fully tested. Therefore,
recognizing enthymemes is a vital skill for any critical reasoner.
3. A deductive argument is considered ‘sound’ if and only if:
A. It is valid, regardless of the truth of its premises.
B. The conclusion follows with probability from the premises.
C. It is valid and all its premises are actually true.
D. The conclusion is true, even if the premises are false.
Correct Answer: C
Rationale: Soundness is the highest standard for a deductive argument in formal logic. To be sound, the
argument must first possess a valid structure where the conclusion follows necessarily. Additionally,
every single premise used in the argument must be factually correct in the real world. A sound argument
guarantees the truth of its conclusion beyond any doubt. Understanding this concept helps in separating
structural correctness from factual accuracy.
4. Which fallacy is committed when someone attacks the character of the person making an argument
rather than the argument itself?
A. Straw Man
B. Slippery Slope
C. Ad Hominem
D. Post Hoc Ergo Propter Hoc
Correct Answer: C
, Rationale: The Ad Hominem fallacy occurs when a critic redirects attention from the logic to the
speaker’s personality or history. This approach is logically irrelevant because the truth of a claim does
not depend on who says it. Even a person with poor character can present a valid and sound argument.
Critical reasoners must remain focused on the evidence rather than the individual presenting it. Avoiding
this fallacy ensures that arguments are judged solely on their own merits.
5. What is the function of a ‘sub-conclusion’ in a complex argument?
A. It acts as a premise for the main conclusion while being supported by other premises.
B. It serves as the final point the author wants to prove.
C. It is a statement that contradicts the main argument for the sake of debate.
D. It is a definition of terms used at the start of the argument.
Correct Answer: A
Rationale: Complex arguments often contain intermediate steps known as sub-conclusions. These
statements are supported by initial premises and then serve as support for the ultimate conclusion.
Mapping these steps is essential for understanding the full flow of reasoning in long texts. Each sub-
conclusion must be evaluated for its own strength before the final claim can be accepted. This
hierarchical structure is a hallmark of sophisticated logical reasoning.
6. Which of the following is a common ‘premise indicator’ word?
A. Therefore
B. Thus
C. Consequently
D. Since
Correct Answer: D
Questions and Correct Answers with Rationale
1. Which of the following best describes the primary goal of an argument in the context of critical
reasoning?
A. To provide reasons for accepting a specific conclusion as true.
B. To explain the causes of a specific event or phenomenon.
C. To summarize various viewpoints on a controversial topic.
D. To describe the characteristics of a physical object or concept.
Correct Answer: A
Rationale: Critical reasoning defines an argument as a set of statements designed to support a
conclusion. Unlike an explanation which clarifies ‘how’ or ‘why’ something happened, an argument
attempts to prove ‘that’ something is so. The premises act as the evidence while the conclusion is the
claim being supported. Distinguishing between persuasion and description is essential for logical
analysis. This distinction allows thinkers to evaluate the strength of the support provided for a claim.
2. In logical terms, what is an ‘enthymeme’?
A. An argument with an unstated premise or conclusion.
B. A deductive argument that is both valid and sound.
C. An argument that contains a logical fallacy.
D. A statement that is true by definition alone.
Correct Answer: A
Rationale: An enthymeme is an argument where one or more components are left implicit because they
are assumed to be understood. This structure is common in everyday discourse where speakers rely on
,shared knowledge. Identifying hidden premises is crucial for standardizing an argument for evaluation.
Without uncovering these missing links, the logical validity of the claim cannot be fully tested. Therefore,
recognizing enthymemes is a vital skill for any critical reasoner.
3. A deductive argument is considered ‘sound’ if and only if:
A. It is valid, regardless of the truth of its premises.
B. The conclusion follows with probability from the premises.
C. It is valid and all its premises are actually true.
D. The conclusion is true, even if the premises are false.
Correct Answer: C
Rationale: Soundness is the highest standard for a deductive argument in formal logic. To be sound, the
argument must first possess a valid structure where the conclusion follows necessarily. Additionally,
every single premise used in the argument must be factually correct in the real world. A sound argument
guarantees the truth of its conclusion beyond any doubt. Understanding this concept helps in separating
structural correctness from factual accuracy.
4. Which fallacy is committed when someone attacks the character of the person making an argument
rather than the argument itself?
A. Straw Man
B. Slippery Slope
C. Ad Hominem
D. Post Hoc Ergo Propter Hoc
Correct Answer: C
, Rationale: The Ad Hominem fallacy occurs when a critic redirects attention from the logic to the
speaker’s personality or history. This approach is logically irrelevant because the truth of a claim does
not depend on who says it. Even a person with poor character can present a valid and sound argument.
Critical reasoners must remain focused on the evidence rather than the individual presenting it. Avoiding
this fallacy ensures that arguments are judged solely on their own merits.
5. What is the function of a ‘sub-conclusion’ in a complex argument?
A. It acts as a premise for the main conclusion while being supported by other premises.
B. It serves as the final point the author wants to prove.
C. It is a statement that contradicts the main argument for the sake of debate.
D. It is a definition of terms used at the start of the argument.
Correct Answer: A
Rationale: Complex arguments often contain intermediate steps known as sub-conclusions. These
statements are supported by initial premises and then serve as support for the ultimate conclusion.
Mapping these steps is essential for understanding the full flow of reasoning in long texts. Each sub-
conclusion must be evaluated for its own strength before the final claim can be accepted. This
hierarchical structure is a hallmark of sophisticated logical reasoning.
6. Which of the following is a common ‘premise indicator’ word?
A. Therefore
B. Thus
C. Consequently
D. Since
Correct Answer: D
