This question asks for the author's concern. This type of question comes up often.
In this passage,
- The first paragraph points out that GNP is not the soundest indicator but human indicator is better one.
- The second paragraph starts with political economists' defense for sticking to GNP but the author gives out two counter examples to refute it (pointing out the weakness of GNP).
- The last paragraph introduces real-life application on choosing away from GNP.
When pre-phrasing, the author's concern is to point out why GNP is not a suitable indicator for a nation's well-being while human indicator is the better one.
Let's go to the answer choices.
A) While the author does introduce something new (human indicator), we are only talking about the "indicator" not the way, or direction, for domestic economic efforts.
B) While this doesn't cover the element of "human indicator", this definitely covers the major intention of pointing out the problem of GNP. This is Correct.
C) This is just a detail to support the author's argument. Not primary purpose.
D) Same as C). This is true, but it's not the author's purpose.
E) Never mentioned in the passage at all.
Although other answers were clearly incorrect, I didn't like B) because the part regarding "human indicator" was pretty emphasized in the passage, but didn't get included. Anyone agrees with me?