Us is correct answer. Us is a pronoun. Direct object is a word or group of words that is acted on by a subject.
For Example of direct objects: Monica hit the ball. Raul carried his books in a backpack.
Hope this helps, and Thank you.
Because of, due to, consequently, if then, since, so, thus, as a result, therefore.
The answer is D) P<span>erseverance</span>
The correct answer would be the third option, prosperous. This means it's successful and doing well :)