Question

Which of the following is an example of the principle of checks and balances?

Presidents can veto an act of congress
Members of congress have the powers to raise their own salaries
Federal courts have the power to hear cases involving federal laws
Presidents can appoint officers of the armed forces

Answer 1

I think the best choice for the answer is "Presidents can veto an act of congress".

The system of check and balance is based on the principle that no institution or individual may hold the power which no one can challenge; in short one branch of a system will limit the power of another branch which can prevent the abuse of power.