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Q: The compression is made at the place where the air pressure is –
  • A. Zero
  • B. Less
  • C. Endless
  • D. High
Correct Answer: Option D - Compression is the region of high pressure and high density in the air.
D. Compression is the region of high pressure and high density in the air.

Explanations:

Compression is the region of high pressure and high density in the air.