While studying how whales communicate in noisy oceans, biologists found that some species have adapted by using different frequencies, which helps their sonar clicks _______ the background noise of shipping vessels.
2
readingWhich choice completes the text with the most logical and precise word or phrase?
A
mimic
B
penetrate
C
enhance
D
absorb
Correct Answer: B
Choice B is the best answer. The text explains that the sonar needs to be heard despite the noise. "Penetrate" means to force a way through or be heard through.
Choice A is incorrect because "mimic" means copy. Choice C is incorrect because "enhance" means improve (the noise). Choice D is incorrect because "absorb" means to take in.