Since you aren't saying "the officer", it is specifically referring to one officer. Capitalize, officer.
The anwser is A... Therefore, he must leave early.
The answer is A, hope this helps!
Answer:
It's an adverb
Explanation:
I just took a quiz with this question.
The best way to remember the difference between adverb and adjective is that adverb is the action and adjective is described something
Marry Shelly who wrote the gothic novel of Frankenstein