It is an acronym for a German car. Bayerishe Motoren Werke
I would say that it hasn't increased 20% because 1. if the starting percentage was 18%, you would see a larger precentage but that isn't the case.
I think the answer is A. because it talks about a father and son, C. because it seems as if it's tradition to worship your father's gods, and D. because of the statement of the men chuckling at the end
He probably pointed out that they looked similar because Stryver asked one of the two accusers after being given the note, if he had ever seen someone that looked like Darnay before.
We can infer that it had something to do with their appearance.
And you could have mentioned that this is from "A Tale Of Two Cities"
Can you explain your question more ?