GRE General Test: SE-805179 GRE Sentence Equivalence

Vaillant, who has been particularly interested in the means by which people attain mental health, seems to be looking for _____ answers: a way to close the book on at least a few questions about human nature.
Select the two answer choices that, when used to complete the sentence, fit the meaning of the sentence as a whole and produce completed sentences that are alike in meaning