OE

The word “yet” indicates that the words that fill the blank will contrast with “related.” While not perfect synonyms, “divergent,” which means developing in different directions, and “incongruous,” which means not in harmony, would make sentences that are alike in
meaning, so they are the correct pair. “Suitable,” “impactful,” “complementary” (working well together), and “incongruous” (not in harmony with the surroundings) do not contrast with the word related