Question 4
shashank07!
GMATNinja why B is wrong here?
Well, does the first paragraph make a claim that's explained in the second and third paragraphs and then justified with three points in the final paragraph? If so, what claim is that?The first paragraph describes a problem: climate change could threaten food supplies. Paragraphs 2-4 discuss possible solutions to that problem, but they do NOT further explain the problem or attempt to justify the claim that the problem exists.
So (A) is a better choice, as explained here: https://gmatclub.com/forum/the-effects- ... l#p3421179.