Question

what was one cause of the English civil war?
A. Elizabeth was a bad queen
B. William and Mary were catholic
C. Henry VIII refused to marry
D. Charles did not recognize parliament's power

is it B?
I know that religion was a big part of it....

Answer 1

I would say B bcuz religion was the major cause of the E.C.W.

Answer 2

Religion became a big part of it, but it was not B. William and Mary were not the king and queen at that time. Try reading your text materials or this:

http://www.history.com/topics/british-history/english-civil-wars