Who is at the door? Who's belongings are these? Who is responsible for this great mess?
While I do not have the book and cannot give specifics
for similes, look for anything comparing two things with like or as
(he ran"like" a giraffe on stilts)
( she was "as" round as a balloon)
for metaphor it compares without like or as
( the girl was a cat sneaking up on her prey)
Scrooge was a miser in the story, 'The Christmas Carol"'. He is referred to as a sinner because he was greedy and only thought about making money. He never parted with his money and was unkind to his companions and servants. He never gave money for the rebuilding of oranges and for carols which made him a big sinner in the sight of the society, angels and God.
C is correct. I hope I helped you
“they” is an appropriate pronoun in the sentence