Moderate
To check sonic booms, control should be exerted over:
Correct answer: C. Air traffic directions
- A. Traffic on high ways
- B. Sirens of every kind
- C. Air traffic directions
- D. Noise producing devices
Explanation
Sonic booms are produced by aircraft flying faster than the speed of sound, so they are controlled through regulation and direction of air traffic. Highway traffic and ordinary noise-producing devices do not cause sonic booms.
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