To activate waveforms on all tracks simultaneously, which key do you hold?

To activate waveforms on all tracks simultaneously, the correct choice is to hold the OPTION key. This function allows users to manage their view settings across multiple tracks efficiently. By using the OPTION key, you enable a broader editing and mixing process, which is beneficial in scenarios where a comprehensive visual representation of all tracks is required.

Holding the OPTION key signifies a request for an alternative action rather than an individualized approach, thus enhancing overall productivity in audio editing environments. This method is often employed in digital audio workstations (DAWs) to streamline workflows when dealing with various audio tracks, enabling more holistic editing and adjustments.

In contrast, the other keys do not serve the same purpose in this context. For instance, SHIFT often allows for adjustments to selections or actions but does not activate waveforms across all tracks simultaneously. The CONTROL key typically modifies single-track functions, and while it's influential in many commands, it won't achieve the simultaneous activation of waveforms. Similarly, the ALT key, while useful for alternate functions, does not serve the specific function of activating all waveforms together in this context.