Final answer:
Congress has an advantage over the president with the power to regulate foreign and interstate commerce, ratify treaties, and introduce legislation. These powers enable Congress to exert significant influence over policy and provide a system of checks and balances. The correct answer is b. Congress can regulate foreign and interstate commerce.
Step-by-step explanation:
The power that gives Congress an advantage over the president is that Congress can regulate foreign and interstate commerce. This is part of the enumerated powers that Congress has, which also include the ability to tax, borrow money, declare war, and raise and maintain an army and navy. Through these powers, Congress sets policy on fundamental aspects of governance including war and peace.
The Senate specifically has the authority to ratify treaties and consent to presidential appointments which can affect foreign policy and the function of the judiciary and executive branches.
Additionally, Congress can exercise oversight over the executive branch through its amending and budgetary powers, and only Congress has the power to introduce legislation. These checks and balances are essential to the U.S. system of government to prevent any one branch from becoming too powerful.