The correct answer is A. We practiced for the debate and many arguments were rehearsed.
As you can see in this sentence, in the first part the pronoun <em>we </em>is used, and in the latter part, that pronoun just disappears and the sentence suddenly becomes passive rather than active. The shift isn't done properly - it is rather awkward. The other options are consistent - they use only one voice rather than two (like in sentence A).
Answer: Wishing ill on others
Explanation: Malevolent means, having or showing a wish to do evil to others.
I would say that it means that people were fearful from something behind them, and some people were lost, it was cruel and scary but at the same it was beautiful that would make you lose all faith then get it all back again.