Answer:
Checks and Balances is the correct answer.
Step-by-step explanation:
One branch of the government can restrain the power of other branches by the system of checks and balances. This system is an important part of constitution, with this each branch of the government can limit the power of other branches. It prevents any one branch from becoming too powerful, and to balance the power between them.
Example: The US congress is the legislative branch and have the sole power of declaring war with other nations, but the President of US is the commander-in-chief of the armed forces. This creates a tension between both as congress can declare wars but cannot give order. The president can give orders but cannot declare war. And if any of one of these two branches tries to overstep its powers and limits, the other branch can correct it or put limits on it.