Select the two answer choices that, when used to complete the sentence, fit the meaning as a whole and produce completed sentences alike in meaning: Established scientists recognize that peer review of manuscripts submitted to scientific journals is critical to science, but this recognition _____ a certain ambivalence in them, since reviewing takes time away from their research.

"Obviates" means to remove a need or difficulty, which contradicts the context of the sentence. The sentence suggests that the recognition of peer review leads to ambivalence, not an elimination of it. Therefore, this choice does not fit the intended meaning.

"Mitigates" refers to making something less severe or serious. While it could imply a reduction in ambivalence, it does not capture the creation of ambivalence as the sentence requires. This choice does not appropriately convey the relationship described in the context.

"Induces" means to bring about or give rise to something. Although it suggests a causal relationship, the word does not fully capture the nuance of creating ambivalence. The recognition does not simply induce ambivalence; it generates a more complex emotional response, which "engenders" better describes.

"Exacerbates" means to make a situation worse. This choice implies that the recognition increases ambivalence, which is not accurate in this context. The sentence focuses on the creation of ambivalence, rather than worsening it, thus rendering this option unsuitable.