What window allows you to change the default thumbnail of a clip by pushing the poster frame button?

The correct choice is associated with the functionality of changing a clip's thumbnail by selecting a specific frame, known as a poster frame. In this context, the window that allows for such modifications is primarily the Project Window. This window is designed to handle various aspects of a project, including the management of media assets such as clips, their organization within a project timeline, and their visual presentation in the form of thumbnails.

By utilizing the features of the Project Window, creators can push the poster frame button to select a specific frame from the clip, which will then be used as the thumbnail. This is important for visual organization and identification of clips in a project, as the thumbnail becomes the primary representation of that clip.

In contrast, other windows serve different purposes. For instance, the Inspector Window typically allows for detailed adjustments and settings for a particular clip, but it isn’t focused on thumbnail management. Meanwhile, the Media Window generally provides access to media files and assets but does not offer the same functionality for altering clip thumbnails. The Edit Window is primarily used for editing sequences and arrangements rather than managing clip displays directly.