Answer:
Which unit are you talking about? If you please tell, I would really answer
Explanation:
"Alas, our poor brother is gone. It's too hard to bear the loss, especially since we never even got to see him." Hope I did that rightXD
"she" would be the pronoun.
You can rewrite this question as "She is your best friend?"
So in that case, "she" would be the subject.
In English, you just switch around "is" and the subject to make a question and make it sound Englishy
PS in Italian (and probably other languages) you would just say "She is your best friend?"
It would be C because most of the time humans dont change the landscape.
The answer you are looking for is B, participle.