This questions asks us to weaken Juan's argument.
The core is that because the amateurs rarely have financial or material resources they were unlikely to ever offer a serious challenge to professionals and back in the ancient olympics they didnt have this so the argument concludes that the presence of professional athletes violates the spirit of fairness.
Im not sure if I had to consider Michiko's argument but it didnt seem like I had too.
I am confused why D is the right answer. I dont understand what D means. I picked C because I eliminated everything. Could anyone please break down the answer choices? I think see pertains to the argument to some extent