19. According to the passage, which of these is true about sound? a. Sound cannot move air molecules out of its way.
b. Sound cannot travel faster than the speed of sound.
c. Sound is not affected by the size of a moving object.
d. Sound is not affected by the air at different altitudes.

What’s the answer to this?

what is the question?

explanation:

the correct answer is the last option

hope this

your pal abigail

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