The quality of an audio file is determined by . A. how pixelated it is BY. the number of megabytes C. the number of frames per second D. its bit rate

D. its bitrate

Explanation:

A. is incorrect, as "pixelated" refers to screen pixels (graphics)

B. is incorrect, as "megabytes" refers to file size. (Modern file compression can reduce file size while maintaining audio quality.)

C. is incorrect, as "frames per second" refers to video not audio

D. is correct, bitrate is often referred to in kilobits per second (for example, 320Kbps).

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