Question

a central assumption in microeconomics is that
there are plenty of resources to satisfy wants if people are not wasteful.
people are motivated primarily by financial gain
humans behave irrationally.
people have to make choices because they cant have or do everything.
both b and d.

Explanation:

• Option A: Microeconomics assumes scarcity of resources, so this is wrong.
• Option B: A central idea is that people act to maximize utility, often related to financial gain (e.g., profit - seeking by firms, income - maximizing by workers).
• Option C: Microeconomics assumes rational behavior (people make optimal choices), so this is wrong.
• Option D: Scarcity (people can't have everything) forces choices, which is a central microeconomic assumption.
• Option E: Since B (people motivated by financial gain as part of rational self - interest) and D (scarcity - driven choices) are correct, E is the answer.

Answer:

E. Both B and D.