In Final Cut Pro, which function allows you to combine multiple clips into a single clip?

The function that combines multiple clips into a single clip in Final Cut Pro is the Compound Clip. This allows editors to encapsulate a series of clips and other elements (such as effects, transitions, and adjustments) into one cohesive unit. By using a Compound Clip, you can streamline your timeline, keep it organized, and simplify complex edits.

When you create a Compound Clip, you effectively create a new clip that can be treated as a single object, making it easier to manage and apply effects uniformly. This functionality is especially useful in large projects where maintaining clarity is crucial, as it helps in reducing clutter and makes it easier to handle multiple layers of edits without losing track of individual components.

While other options mentioned may relate to managing clips, they don't serve the specific purpose of combining clips into a singular object in the way that Compound Clips do. Grouping Clips is more about organizing clips for simultaneous transformations, Merge Clips deals with syncing audio and video, and Stacking Layers refers to the layering of visuals without creating a new unified clip. Thus, Compound Clips are distinctively designed for this specific task in Final Cut Pro.