Final answer:
The single executive, or president, was limited in power by a maximum of two four-year terms, separation of powers among three branches of government, and the necessity of cooperation between the branches to enact laws.
Step-by-step explanation:
Despite objections, the farmers agreed to a single executive to prevent the establishment of a power that could possibly become too dominant. To ensure the executive would not become too powerful, several limitations were placed on the presidency, including:
- Limited Term: The president is elected for a maximum of two four-year terms, according to the Twenty-Second Amendment passed in 1951.
- Separation of Powers: The government was divided into three distinct branches: legislative, executive, and judicial, each with checks and balances to limit the power of the others.
- Approval from Another Branch: While the president has the power to propose legislation, Congress must approve it before it becomes law. Additionally, even if Congress passes a bill, the president must sign it for it to become law, thus requiring cooperation between branches.
Options C and D are not accurate as the president does not need approval from all three branches or from the vice president to enact a law.