What feature allows users to adjust multiple audio clips simultaneously?

The ability to adjust multiple audio clips simultaneously is indeed facilitated by using an adjustment layer. Adjustment layers in video and audio editing software allow users to apply effects or modifications across a range of clips rather than applying changes individually. This can save time and ensure consistent audio settings throughout a project.

For instance, if you want to increase the volume or apply a specific audio effect to several clips in a timeline, using an adjustment layer means you can make a single change that affects all selected audio clips beneath it. This offers a streamlined workflow, especially useful in projects with numerous audio elements, as it minimizes the need to adjust settings clip by clip.

Other options, like the clip mixer, allow for the adjustment of audio levels for multiple tracks but would not apply changes in the same integrated manner across all clips. Audio keyframes provide a method for changing audio level dynamically over time for specific clips, but again, they deal with individual instances rather than a broad adjustment across multiple clips at once. Audio effects refer to specific alterations or enhancements applied to audio clips but would typically need to be managed individually unless applied through an adjustment layer or a similar approach.