Which of the following is an unfair use of pathos and should be avoided?

The correct answer is If you don’t remember the Holocaust, you are evil.

Explanation:

According to Aristoteles, Pathos is the ability of the speaker or writer to influence the feelings and emotions of his audience.

It is a mode of persuasion in which the speaker tries to reach a certain emotion or influence the decision of who is listening or reading.

That's why it would be wrong to use the phrase "If you don’t remember the Holocaust, you are evil. ", since it does not have an indirect way to appeal to someone's emotion.

to inform the reader that the text will take a second look at the grimms’ original tales

yes, it can be both.