What is one example of a type of media that might be used in a speech? a. a piece of statistical evidence b. a short video clip c. a well-known quotation d. a simile or metaphor

The right answer is the B) A short video clip.

Explanation: Just to elaborate a little on the answer, it can be added that a simile or metaphor, which can be used as part of a speech, are rhetorical figures or figures of speech, but not types of media. In addition, a quotation or a piece of evidence (which could certainly be extracted from a newspaper, or from the Internet, both regarded as media) can also be used to enhance a speech, but they are not types of media in themselves. I would contend, therefore, that only option B is right, since media refers to a means of mass communication, and a video clip, which is often meant to be broadcasted in the TV or the Internet, can be regarded as such.  

B. A short video clip

Also possible answers:

a video clip or video

A diagram of the core of the earth