I've read it not so long time ago, so I remember it well enough. I'm 100% sure that my answers are correct. Check it out:
1. If my memory serves me well, Gene trains for the 1944 Olympics because of this: B. Gene will compete for Finny since Finny cannot because of his leg.
2. I'm definitely sure that the sentence given above is a perfect example of the C. foreshadowing.