Question

martin uses mp3 files often. he just learned this file type uses lossy compression. which of the following describes lossy audio formats? a they retain the original quality of the initial recording. b they lose data after each playback. c they lose data and do not maintain their original size. d they return to the original size after decompression.

Explanation:

To determine the correct answer, we analyze each option:

• Option A: Lossy compression does not retain original quality (lossless does), so A is incorrect.
• Option B: Lossy formats lose data during compression, not after playback, so B is incorrect.
• Option C: Lossy compression involves removing some data (losing data) and reducing file size (not maintaining original size), which matches the definition.
• Option D: Lossy compression does not return to original size after decompression (lossless might in some cases, but lossy doesn't), so D is incorrect.

Answer:

C. They lose data and do not maintain their original size.