please give me this answer it's very urgent friends
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Answer:
a) is the answer now make me brainliest please please please please please @) is the correct answer , you will definitely get marks please make me brainliest
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Answer:
b
Explanation:
Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz. (Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature; the upper limit in average adults is often closer to 15–17 kHz.)
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