Multiple Choice
Some city parks in Philadelphia have installed sonic devices designed to prevent children and teens loitering, while older adults cannot even hear it. This is because ________.
A) volume is too high for adults to hear
B) the frequency is too high for adults to hear
C) amplitude is too high for adults to hear
D) timbre is too difficult for adults to hear
Correct Answer:
Verified
Correct Answer:
Verified
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