Many videos include the option to turn on subtitles, or closed captions so that users can watch the action on screen and read what is being said in the voice-over.

Apple Safari, Google Chrome, Microsoft Edge, and Mozilla Firefox are examples of ________.

Fill in the blank(s) with the appropriate word(s).

You can press the ____ key to insert a keyframe at the selected location.

A. F B. Q C. F5 D. F6