Question

imagery and repetition are aspects of
formality.
purpose.
tone.
word choice.

Explanation:

Imagery (using descriptive language to create mental pictures) and repetition (repeating words/phrases) are techniques related to how words are selected and used in writing or speech, which falls under word choice. Formality refers to the level of formality in language, purpose is the goal of communication, and tone is the author's attitude—none of these directly encompass imagery and repetition as word - choice does.

Answer:

D. word choice