e) which ghost is scrooge most scared of ?

Scrooge is most afraid of the Ghost of the Future.

"Ghost of the Future!" he exclaimed, "I fear you more than any spectre I have seen. But as I know your purpose is to do me good, and as I hope to live to be another man from what I was, I am prepared to bear you company, and do it with a thankful heart. Will you not speak to me?"

Scrooge is more afraid of the last ghost because of it's apperance which is dark and a shadow