Answer: C. Though their personalities were very different, Dickinson and Whitman are both important poets because they captured elements of American life in memorable ways.
Explanation:
This is the most effective comparison-contrast statement because it shows why the two poets should have been different but instead surmounted those differences and had a shared legacy.
It did this by showing that even though both poets had different characters, they managed to capture American lifestyle in a memorable manner even though they would have been expected not to do so seeing as they are similar people.