What tool allows you to prepare an audio clip to receive multiple keyframes at once?

The correct answer is the Range Selection tool. This tool is specifically designed to select a portion of an audio clip, allowing for the application of multiple keyframes across the selected range. By enabling the user to create keyframes at once, it streamlines the editing process, especially when adjustments over a segment of audio are needed.

Using the Range Selection tool is particularly beneficial for making broad changes to audio levels or effects throughout a continuous segment without the need to insert keyframes one at a time. This capability enhances efficiency and precision during audio editing, contributing to a more manageable workflow when fine-tuning audio transitions or effects.

The other tools listed, such as the Audio Inspector tool and the Keyframe Editor tool, serve different purposes. The Audio Inspector tool is primarily for adjusting audio attributes and monitoring levels. Meanwhile, the Keyframe Editor tool focuses on managing existing keyframes and won't facilitate the creation of multiple keyframes in a single action. The Clip Trimmer tool is used for adjusting the timing of clips and does not specifically relate to keyframing audio adjustments.