What is the principle that each branch of the federal government has some ability to oversee and influence actions by other branches of government?

checks and balances

Explanation:

The ensure that power is not concentrated in the hands of those who control the government, the framers of the constitution of the United States divided the government into three branches that are legislative, executive and judiciary. These branches check the power of each other and therefore the separation of power is ensured by the principle of check and balance.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.