Concept:Separation of powers divides government functions among different arms to prevent the concentration of authority.
Explanation:In a presidential system, the powers of government are separated into three distinct branches.
These are the executive, the legislature, and the judiciary.
Each branch has its own separate role and powers.
This arrangement creates a clear distinction of governmental powers.
It does not mean sharing of powers, nor does it refer to levels of government or dual political leadership.
Answer:A. distinction of governmental powers.