Question

the primary purpose of a prefix is...
establish a words
denotation
determine a words part
of speech
create an antonym
the affixes attach to it

Explanation:

A prefix is an affix added before a root word. One common use is to create an antonym (e.g., "un-" in "unhappy" from "happy"). Establishing denotation is more about the word's definition (not prefix's main role), and prefixes don't determine part of speech (suffixes or context do). The last option is unclear in wording, but the best fit is creating an antonym.

Answer:

C. create an antonym (assuming the options are labeled A, B, C, D with A: establish a word’s denotation, B: determine a word’s part of speech, C: create an antonym, D: the affixes attach to it)