Read this passage from the article: [Vampire bats] feed on the blood of some animals. But they actually help people. Scientists are studying vampire bat spit. They’re hoping to develop medicines with it! The author uses this passage mostly to __________.
A. show that bats are smarter than other animals
B. explain how bats can be useful
C. show that bats are cuter than other animals
D. explain how bats can be harmful
The author uses this passage mostly to __________
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The correct answer is B. explain how bats can be useful.
Explanation: The passage highlights that, although vampire bats feed on blood, they are being studied for their potential to help people develop medicines. This indicates a positive aspect of bats, focusing on their usefulness rather than any negative traits.