SAT Practice14f20e82-eb6c-41e2-a77c-78351a1cd67b

Practice one SAT question at a time

Questions come from the Bluebook question bank. Made by Iskaa303 (Iskander Madikhan).

In episodes of high heat, corals expel symbiotic zooxanthellae from their tissues, leading to coral bleaching and heightened coral mortality. Some researchers have proposed a mitigation strategy of identifying, rearing, and disseminating corals that have evolved strong resistance to heat, but as Nia S. Walker et al. note, if genes conferring such resistance were exclusively advantageous, they should have already propagated through coral populations. Indeed, Walker et al. show that strongly heat-resistant corals display much less growth after heat stress than do moderately heat-resistant corals.

Based on the text, Walker et al. would most likely agree with which statement about the strategy some researchers have proposed?