Out of all the pronouns, "whom" makes the most sense grammatically. This allows us to narrow it down to A or D.
In order for it to be the object of a preposition, there would have to be a preposition in front of it. "For," however is <em>not</em> a preposition. In fact, there isn't a preposition in the whole question.
This leaves us with option D, which is the correct answer.
You can better tell it's a direct object if you flip the sentence around a bit.
Your sister is waiting <em>for whom</em>?
"Whom" is essentially receiving the action. "Whom" is what your sister is waiting for.
Answer: D. whom; direct object.
Idk I think it could be C
If u read carefully with all ur hearts then the title and introduction is the evidence which will lead u to wat is written
I agree with the person above - although this wouldn't be my first thought when I hear the word empower, among these answers, the one that seems the most correct is A. to create a strong desire or longing.
For example:
The desire to go home empowered me.
D) old and full of holes, but the three brothers