Here the correct answer is (C). We arrive at pairs of words with an analogous relationship to
one another only if we fill the blanks with "variety" and "deed." In each case, the
pairs of words are synonyms, that is, they have the same meaning. "Variety" means the
same as "diversity" and "deed" means the same as "action."
(A), (B) and (D) do not result in analogous relationships between the two pairs of words.