I think the answer A. is a good one. As long as you have the evidence to prove it, it would be A.
Answer: Genetic Engineering
Explanation:
Everyone
done his or her homework.
Explanation:
Everyone is singular and, therefore, require singular verb.

Smoking, littering, driving cars, not recycling
The word alone can be read several ways this is suggested by "To me alone..." she is stating that only in her opinion it is a time or pause. Hope this helps!