What Was the Most Prominent Cause of the American Revolution

What was the most prominent cause of the American Revolution?

A) Most colonists had little respect for the system of British government.
B) The colonists believed that King George had failed to secure their basic rights.
C) King George ordered the impressment of American sailors into the Royal Navy.
D) Britain stopped supplying the colonies with tea.
E) The British crushed the Americans at the Battle of Bunker Hill.