Test Bank for Economics, 9th Edition by Glenn Hubbard Complete Guide with
200 Multiple-Choice Questions, Answers & Rationales
This comprehensive test bank covers all 28 chapters of Hubbard & O'Brien's
Economics, 9th Edition (2025/2026 update). Questions are organized by textbook
section, each with four answer choices (A-D), the correct answer, and a detailed
rationale. Information is adapted from official test bank resources and the
textbook itself .
PART 1: INTRODUCTION (Chapters 1-4)
Chapter 1: Economics: Foundations and Models
1. Apple assembles most iPhones in China and India because lower wages and
manufacturing experience reduce costs. This is an example of which key economic
idea?
A) People are rational.
B) People respond to economic incentives.
C) Optimal decisions are made at the margin.
D) Firms attempt to maximize revenues.
Answer: B
,Rationale: This demonstrates that firms like Apple respond to economic
incentives (lower production costs) to maximize profits. The decision to locate
production where costs are lowest reflects incentive-driven behavior .
2. In economics, choices must be made because we live in a world of:
A) Unemployment
B) Scarcity
C) Greed
D) Unlimited resources
Answer: B
Rationale: Scarcity is the fundamental economic problem—unlimited wants
exceed limited resources—forcing individuals and societies to make choices .
3. Which statement about scarcity is TRUE?
A) Scarcity refers to unlimited wants exceeding limited resources.
B) Scarcity is not a problem for the wealthy.
C) Scarcity is only a problem when a country has too large a population.
D) Scarcity only arises when there is wide income disparity.
,Answer: A
Rationale: Scarcity affects everyone, regardless of wealth or population size. It is
the universal condition that resources are finite while human wants are infinite .
4. By definition, economics is the study of:
A) How to make money in the stock market.
B) How to make money in a market economy.
C) The choices people make to attain their goals, given their scarce resources.
D) Supply and demand.
Answer: C
Rationale: Economics examines how individuals, firms, and societies make choices
to achieve their goals when faced with scarcity. It encompasses but is not limited
to supply and demand .
5. An economic ________ is a simplified version of some aspect of economic life
used to analyze an economic issue.
A) Market
B) Trade-off
C) Variable
, D) Model
Answer: D
Rationale: Economic models are simplified representations of reality that help
economists understand and predict economic behavior. They abstract from
irrelevant details to focus on key relationships .
6. The term "market" in economics refers to:
A) A place where money changes hands.
B) A legal institution where exchange can take place.
C) A group of buyers and sellers of a product and the arrangement by which they
come together to trade.
D) An organization that sells goods and services.
Answer: C
Rationale: A market is any arrangement that brings buyers and sellers together to
trade. It need not be a physical location; it can be a virtual or informal
arrangement .
7. Economists assume that individuals:
200 Multiple-Choice Questions, Answers & Rationales
This comprehensive test bank covers all 28 chapters of Hubbard & O'Brien's
Economics, 9th Edition (2025/2026 update). Questions are organized by textbook
section, each with four answer choices (A-D), the correct answer, and a detailed
rationale. Information is adapted from official test bank resources and the
textbook itself .
PART 1: INTRODUCTION (Chapters 1-4)
Chapter 1: Economics: Foundations and Models
1. Apple assembles most iPhones in China and India because lower wages and
manufacturing experience reduce costs. This is an example of which key economic
idea?
A) People are rational.
B) People respond to economic incentives.
C) Optimal decisions are made at the margin.
D) Firms attempt to maximize revenues.
Answer: B
,Rationale: This demonstrates that firms like Apple respond to economic
incentives (lower production costs) to maximize profits. The decision to locate
production where costs are lowest reflects incentive-driven behavior .
2. In economics, choices must be made because we live in a world of:
A) Unemployment
B) Scarcity
C) Greed
D) Unlimited resources
Answer: B
Rationale: Scarcity is the fundamental economic problem—unlimited wants
exceed limited resources—forcing individuals and societies to make choices .
3. Which statement about scarcity is TRUE?
A) Scarcity refers to unlimited wants exceeding limited resources.
B) Scarcity is not a problem for the wealthy.
C) Scarcity is only a problem when a country has too large a population.
D) Scarcity only arises when there is wide income disparity.
,Answer: A
Rationale: Scarcity affects everyone, regardless of wealth or population size. It is
the universal condition that resources are finite while human wants are infinite .
4. By definition, economics is the study of:
A) How to make money in the stock market.
B) How to make money in a market economy.
C) The choices people make to attain their goals, given their scarce resources.
D) Supply and demand.
Answer: C
Rationale: Economics examines how individuals, firms, and societies make choices
to achieve their goals when faced with scarcity. It encompasses but is not limited
to supply and demand .
5. An economic ________ is a simplified version of some aspect of economic life
used to analyze an economic issue.
A) Market
B) Trade-off
C) Variable
, D) Model
Answer: D
Rationale: Economic models are simplified representations of reality that help
economists understand and predict economic behavior. They abstract from
irrelevant details to focus on key relationships .
6. The term "market" in economics refers to:
A) A place where money changes hands.
B) A legal institution where exchange can take place.
C) A group of buyers and sellers of a product and the arrangement by which they
come together to trade.
D) An organization that sells goods and services.
Answer: C
Rationale: A market is any arrangement that brings buyers and sellers together to
trade. It need not be a physical location; it can be a virtual or informal
arrangement .
7. Economists assume that individuals:
