How could separate governments be a weakness

It would lead to gridlock in enforcement of different government policies, which would cause total collapse of the government.

Explanation:

Separatee governments is a situation in which two different parties are in control of government simultaneously. This occurs when one party controls the executive branch while another party controls one or both houses of the legislative branch.

One major effect of this is that it can easily lead to legislative gridlock.

b is the answer i am assuming