If the words brave and courageous were used in the same context, they would be examples of <span>C. synonyms.
</span>Synonyms are words that have the same meaning. Antonyms are words that have the opposite meanings. Brave and courageous are adjectives, so they cannot be either A or D.
D. Topic sentence
Topic sentences are related to the thesis statement, or main argument of the essay, and are supported throughout body paragraphs.
Capitals are used for proper nouns.