Refer to the following graph to answer the next question. In the graph, Point B is

Question

BlackTom AI · Accepted Answer

Points on the production possibilities frontier (PPF) represent combinations of two goods that exhaust all available resources and technology — they are productively efficient. In the graph the vertical axis is milkshakes and the horizontal axis is smoothies; the thick line labeled PPF connects the maximum-milkshake point (B) to the maximum-smoothie point (D) with intermediate efficient points such as C.

Step-by-step reasoning:
1. Identify the PPF: the thick downward-sloping line from B to D is the PPF (the economy’s production boundary).
2. Locate point B relative to that boundary: B lies exactly on the PPF at the milkshake intercept (the economy is producing the maximum possible milkshakes and zero smoothies).
3. Apply the definition of efficiency: any point on the PPF uses all resources with no waste, so output cannot be increased for one good without reducing the other. Therefore B is an efficient allocation.
4. Contrast with other locations shown: A lies inside the PPF (interior), indicating unused or misallocated resources (inefficient). E lies outside the PPF, representing a combination unattainable with current resources/technology.

Why answer (a) is correct:
- B is on the boundary curve, so it reflects full and efficient use of resources — by definition an efficient point.

Why the other choices are incorrect:
- (b) “an impossible point” and (d) “unattainable with current resources” describe points outside the PPF (like E), not B.
- (c) “an inefficient point” describes interior points (like A) where resources are underutilized; B is not interior.

Conclusion: Because B lies on the PPF and uses all resources productively, the correct classification is “an efficient point,” matching the provided answer (a).

Refer to the following graph to answer the next question. In the graph, Point B isSingle choice

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Figure 11-1 The following graph shows the production possibility frontier for a country and the indifference curves for the consumers in that country. Refer to Figure 11-1. Point E is superior to point (X1, Y1) for all of the following reasons except:

PPF 之外的点是

PPF 内的点是

PPF 上的所有点都是

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