Which British policy convinced many American colonists to want to form their own country in

C is the correct answer

Found this myself:

Which British policy convinced many American colonists to want to form their own country?

A. Great Britain separated the colonial governments into three branches.

B. Great Britain ignored the colonies during the French and Indian War.

C. Great Britain did not allow the colonists to participate in government.

D. Great Britain planned to sell several of the colonies to the French

The correct answer is C.