A system that ensures that no one person or group of people will have too much power

A. Seperation of Powers

B. Popular Sovereignty

C. Check and Balances

D. Federalism

Answer is option C - checks and balances

Explanation:

In a three-way government (which has in existence, the Judicial, legislative and executive branches), the system of check and balances is needed.

The veto of legislation by the president of the nation (which may be overruled a two-third vote of the congress) and the impeachment of executive and judicial officers by the congress are forms of checks and balances.