Answer:
B. Wilson's marriage and Gatsby's dream
Explanation:
Tom's mistress was Wilson's wife Myrtle, so it's safe to say that Tom "smashed" Wilson's marriage.
Daisy was torn between Gatsby and Tom, and Gatsby's dream had always been to woo her. When she proved less receptive, he ended up dead in the pool. So it's safe to say that Daisy "smashed" Gatsby's dream.
God created water, which means water can remove anything. Like your grandma
A. knew, because if you think about how they all sound, B and C could not work, since they sound kind of weird. D sound like it could work, but only if it was "had <em>know</em><em>n</em>". Therefore the only answer left to pick is "A. knew".