I went through this question twice actually and go it right on the first try and wrong the second time around. >.>
Both times I narrowed the answer choice down to B and C. I'll attempt to give my reasoning as to why answer choice is B is wrong and C is right.
Answer choice B seemed attractive at first because it captured the question aspect of lines 24-27, however, that question is not a rhetorical question because we know the answer. The author goes on to give it to us a few lines below in 32-34: it would take a large return in order for someone to accept a 50% of losing. Even if the we accepted B as a rhetorical question, B would still be wrong because 24-27 is not in conflict with the previously accepted view. The rhetorical question, in fact, is used to explain the previous view. Therefore, B is wrong.
Answer choice C says that, although the newer view helps us to understand many risk taking situations, the older view does help us as well to understand some situations, particularly those in which a risky venture may result in a sufficiently high compensation if the gamble is won.
Am I on the right track?