Answer: 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.
The answer would be the first choice or A. "Original ideas that are <em>not</em> your own."
Any piece of information that does not belong to you would require a citation, otherwise it would be considered <em>plagiarism. </em>B and C are incorrect because both of those things belong to you, and therefore don't require citation. D is also incorrect because a general fact doesn't belong to any one person. For example, if you wanted to include the information that dogs can't eat chocolate, that wouldn't require a citation because that is general knowledge that most people are aware of.
