Passage: "Elephants communicate over long distances using low-frequency sounds that humans cannot hear." Which of the following is true?
Answer and explanation
Correct answer: C. Elephants use sounds that humans cannot hear.
- Step 1: The passage says low-frequency sounds are inaudible to humans.
Answer
Elephants use sounds that humans cannot hear.
Why not the others: Elephants cannot communicate., Humans hear all elephant sounds. and Elephants only communicate by touching with their trunks. don't fit.
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