I feel like it's not, because google says that metaphor is a figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable. It may be if something else was added to the sentence. But since there isn't anything else to it, it isn't because it does not match the description of a metaphor.
Answer:
Pathos
The main appeal in this speech.
His argument is that indifference is worse than anger, and he appeals to human emotion by talking of the holocaust, the suffering and injustices.
Explanation:
( I tried to work out for pathos...) So yeah I hoped it helped you out!
C because it always depends on ethos pathos and logos