Points inside the PPF are

Question

BlackTom AI · Accepted Answer

The production possibilities frontier (PPF) is the set of maximum output combinations of two goods an economy can produce given its resources and technology. Points on the curve are productively efficient (full use of resources); points outside the curve are unattainable with current resources; points inside the curve are attainable but do not use resources fully.

Step-by-step reasoning:
1. Define the frontier: any point on the PPF means the economy is producing the maximum possible of one good for a given amount of the other — no resources are idle.
2. Interpret a point inside the PPF: it lies below the frontier, so the economy is producing less than its capacity. This implies unemployed or underutilized resources (labor, capital, etc.) or inefficiencies in production.
3. Demonstrate inefficiency: because the point is inside, it is possible to increase production of one or both goods without decreasing the production of the other — i.e., move outward to the PPF. That ability to increase output with existing resources shows the current production is inefficient.
4. Contrast with other regions: a point on the curve is productively efficient; a point outside is unattainable given current resources.

Why the correct answer is "inefficient":
- The defining property of inside points is underutilization of resources, which is the textbook definition of inefficiency in this context. Thus “inefficient” directly captures the economic meaning.

Why other options are incorrect:
- b. “possible.” Although technically points inside are possible (attainable), this label is incomplete and not the standard classification used to describe inside points; the preferred term is “inefficient.”
- c. “unattainable.” Incorrect because unattainable points lie outside the PPF.
- d. “productively efficient.” Incorrect because productive efficiency corresponds to points on the PPF, not inside it.

Conclusion: The correct choice is a. inefficient., which matches the provided answer.

Points inside the PPF are单项选择题

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PPF 之外的点是

PPF 内的点是

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