Why did the New England states want to secede from the Union?

They wanted to trade with England.

They wanted their own government.

They wanted to be part of Canada.

They wanted to grow more crops

This question is a nightmare. The right answer isn't really there. A short answer would be that New England didn't want a second war with Great Britain. There was a real gaffuffle about pressing American seaman into British Navy vessels that cause Jefferson to impose an embargo. All of this centered about the war of 1812.

The choice is between A and B. I would pick A, but I can't eliminate B.

C and D are not really amongst the reasons, particularly C.