The Constitutional principle of checks and balances is exemplified by A. separation of church and state. B. term limits. C. trial by jury. D. presidential veto.

The Constitutional principle of checks and balances is exemplified by 'presidential veto'.

Explanation:

The principle of checks and balances has been put into place to downturn the possibility of overpowering of any one institution responsible for the functioning of the government. The authority of presidential veto that the United States Constitution dispenses to the President is to restrict the powers of the United States Congress to make and implement laws at its own will.