In which part of a DAW would you find the play/pause button?

The play/pause button is found in the transport controls of a Digital Audio Workstation (DAW). The transport controls are a crucial part of the interface as they provide the essential functions for playback, recording, and stopping audio tracks. This area typically includes buttons for play, pause, stop, record, and sometimes even options for fast forward and rewind, facilitating seamless control over audio playback and editing.

In contrast, the other options serve different purposes within the DAW. The settings menu allows users to configure preferences and tool options but does not directly control playback. The effects panel is used for adding and managing audio effects, which also does not involve playback controls. Similarly, the audio mixer focuses on adjusting the levels, panning, and other mixing settings of audio tracks without any transport functions. Thus, the play/pause button is specifically located in the transport controls, which is why this answer is correct.