With this question.

which of the following is a category of rhetorical devices?

all of these
rhetoric of sentences
rhetoric of figures of speech
rhetoric of sounds
rhetoric of words

All of these is your best answer.

Rhetoric of sentences: This occurs when you use a rhetorical device in a sentence, for example:

(Alliteration) He sleeps like a sloth.

Rhetoric of figures of speech: Uses other words to describe what is occurring, for example:

(Metaphors) The Mouth of a River.

(Simile) Jack is like a dog, he is loyal no matter what.

(Personification) The tree reminds me of Jack, they both stand tall and straight.

Rhetoric of sounds: Uses sound to convey meaning. For example, A long wail or moan can usually covey the meaning that the person is in pain. This can also be using Rhetorical Devices during speech.

Rhetoric of words: Uses words to convey meaning. This is using the rhetorical devices while writing.

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you may need to add a question, yeah?