The choices can be found elsewhere ans as follows:
A. The colonies refused to give up any of their own powers to one central authority.
B. The Albany Plan would weaken the economy.
C. The Albany Plan didn't have control over Native American affairs.
D. The Albany Plan would require each state to build their own army.
From the choices, I think the correct answer is option A. The best reason why he English turned down the Albany Plan was because the colonies refused to give up any of their own powers to one central authority.