Which buttons can cut the feed to the control room speakers?

The correct choice is A, as "CUT L+R or MUTE GM" specifically indicates controls dedicated to managing the audio output to the control room speakers. The designation "CUT" suggests a function that disables the left and right audio channels simultaneously, effectively silencing the feed to those speakers. Similarly, "MUTE GM" indicates muting the general mix, which is essential in scenarios where silence is required in the control room for monitoring or other purposes.

Choosing appropriate buttons for managing audio outputs is crucial in a production environment to avoid sending unwanted sounds or signals to the control room. Understanding the functionality of each button helps maintain control over audio feeds, ensuring that the production can proceed smoothly without unintended interruptions.