Who has the most political power in canada

A. British Monarch. One of the most fundamental differences between Canadian and American government is that Canada is a constitutional monarchy while the United States is a type of democracy known as a republic. As a constitutional monarchy, ("Canada's head of state is the British monarch"), who is represented in Canada by an official known as the governor general

It is "Parliament" that has the most political power in Canada, since Canada dose Parliamentary Democratic system of government. 

Possess private property.