C. The Senate rejected President Ronald Reagan's nomination of Robert Bork to the Supreme Court
Explanation:
Given that Checks and balances is one of the principles of democratic government whereby each branch of government has the power to check the actions of the other. For example, the legislative branch of the government taking a decision that checks the actions of the executive. This is usually done to prevent the arbitrary use of power, thereby balancing the use of power.
Hence, in this case, the statement that best illustrates the system of checks and balances is "The Senate rejected President Ronald Reagan's nomination of Robert Bork to the Supreme Court"
