Answer: BY THE THREE ARMS OF GOVERNMENT (THE EXECUTIVE,THE LEGISLATURE AND THE JUDICIARY)
Explanation:The three arms of Government are an example of the constitutional principle of checks and balance.
Check and balance is the concept enshrined in the a Democratic Constitution where each of the arms of Government act as a watch for the other arm.
The legislature checkmates the activities of The Executive to prevent abuse of Power they can summon the Executive arm if they discovered any anomally.
The Judiciary have the powers to interpret laws to bring about fairness and justice for both the Executive and legislative arms.
The Executive through the president has the power not to sign bills passed by the legislature if it is not in line with existing laws.etc