Expository writing is meant to inform a reader about a certain topic. Because of this, D is the correct answer.
A. Informal about music terminology
The correct answer should be<span> D.The consequences of one's actions
This should be correct because it shows the consequences of the Doctor's actions and the consequences of the monster's action, even though the doctor himself was the bigger monster.</span>
These words have similar meanings, so the relationship between them is that they are "synonyms". Synonyms are words with similar meanings, and they can often be used interchangeably within a sentence. Other relationships could include antonyms, which are words with opposite meanings.