PART A: D. to reassure people that most social problems don't need interference and will eventually resolve themselves.

So what’s Part B?

PART B: Which quote from the text best supports the answer to Part A?

A. "Furthermore, whatever good they have done is surely offset, at least in part, by the economic devastation visited on places like Brownsville and East New York in recent years by successive rounds of federal, state, and city social-spending cuts." (Paragraph 4)

B. "According to one study, none of the sixteen problems associated with fetal-alcohol syndrome show up until a pregnant woman starts regularly consuming more than three drinks a day." (Paragraph 12)

C. "It may mean that we need to spend even more money on these kids so that we can hit their tipping point. Hence liberalism's crisis. Can you imagine explaining the link between tipping points and big government to Newt Gingrich?" (Paragraph 18)

D. "Epidemic theory, in other words, should change the way we think about whether and why social programs work. Now for the critical question: Should it change the way we think about violent crime as well?" (Paragraph 20)