Your answer should be WHO.
Think of it like this: You wouldn't say "The boy it (a variant of 'which')", because it simply just sounds odd. Instead, you're wired to think "The boy, he (an unknown name, so it would be 'who')".
"Begging the question" means that we assume that a claim that has been made is the actual truth. But in order for this to be the case, one must accept the claim to be true in order for it to be true. Therefore, as you read through each of the choices, which one is a statement given based true that could be perceived as the truth? 'A' can be proven with data. 'B' is a statement of opinion given by the person speaking, which doesn't qualify here. 'D' isn't a proven truth, again, because it is just one's opinion about a period. 'C' on the other hand, could beg the question because 'bleed-heart liberals' usually side with no death penalty. While this is an over-generalization, this could be a truth as one could perceive it as true.
Answer:
Wouldn't it be irony? Or did you need a specific type of irony?
I am not 100% sure but I used "humorous contrast" and " Playful understatement" but havent gotten my test results back yet...
