Final answer:
The Export Audio/Video option is typically found under the File menu in multimedia, video, and audio editing software applications.
Step-by-step explanation:
Under which toolbar menu can you find Export Audio/Video? The correct answer is D) File.
In most software applications related to multimedia, video editing, or audio editing, Export Audio/Video options are typically located under the File menu of the toolbar. This option is used when you want to save or convert your project into a playable audio or video file format that can be used on other devices or media players. Selecting File usually brings down a dropdown menu where you can find various options such as New, Open, Save, and Export among others. Export Audio/Video is often grouped with related commands that deal with file management and output settings.