A
The theme of Marigolds is the loss of innocence, so I don't believe A could be a theme
Hope this helps, good luck! :)
Both authors suggest that coral reefs are fragile. Both authors state that something must be done to save the reefs. Both authors state that coral reefs are polluting the ocean floor.
A peer review of an essay is a critic or a form of constructive criticism done by your colleague that will help you improve your style of writing, train of throughts or build up your arguments. The answer is c) give general impressions of your topic