If sound is recorded but cannot be heard during playback, which combination should be checked?

Correct answer: Sound card and speaker output

Recording proves that the input path, such as a microphone and recording circuit, captured sound, but playback uses a separate output path. The sound card, playback settings, volume control, selected output device and speakers should therefore be checked. Option A is correct. A scanner, printer, mouse, keyboard, router or modem does not normally control audio playback.