The answer is:
B: The need to raise campaign funds may led to post-election corruption.
The need to raise campaign funds means that someone has to give you money, someone has to support a certain candidate, and the candidate might feel obligated to pay back with political favors, or in the best of cases just be biased towards whom donated him money to run for a political job, as if he had sponsors that payed for him to get to where he is.
