The file extension of an MS Windows sound file is

A.mid

B.txt

C.wav ✓ Correct

DNone of the above

Correct answer: (C) .wav

Explanation

The wav extension marks a Windows waveform audio file, the native uncompressed sound format on MS Windows.

A mid file holds MIDI instructions for instruments, not recorded sound samples.

A txt file stores plain text and carries no audio at all.

Since wav is a genuine Windows sound format, the none of the above choice does not apply.

The wav format stores audio without compression, giving large but high fidelity files.

Compressed formats like mp3 shrink file size by discarding some data.

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