Question

Cruel words are weapons

Answer 1

C. Metaphor

The author is trying to say Cruel words can hurt people, the author is comparing cruel words with weapons, he is making a figure of speech, 'Cruel Words Are Weapons' is a figure of speech (Metaphor),So that makes C. Metaphor correct.

Hope this helps! :)

Answer 2

Metaphor. 

The author is comparing one thing to another by saying it is something else.