What role does the Council of Economic Advisers play in the national economy?

What role does the Council of Economic Advisers play in the national economy?
 
  a. It conducts research for Congress and helps to create the national budget.
  b. It counsels the Fed on all its policy decisions.
  c. It is appointed by the president to work within the Executive Office to provide advice on economic policy.
  d. It is the policymaking arm of the Federal Reserve Board of Governors.

Question -2-

Which of the following is true with regard to the commerce clause?
 
  A. Contained in Article I of the Constitution, the clause sets forth the implied powers of Congress.
  B. It refers to the clause that states that Congress has the right to make all laws essential to carry out all powers the Constitution vests in the national government.
  C. It refers to the clause in the Constitution that requires each state to recognize the civil judgments rendered by the courts of the other states and to accept their public records and acts as valid.
  D. It refers to the clause in the Constitution that gives Congress the power to regulate all business activities that cross state lines or affect more than one state or other nations.
  E. Contained in Article VI of the Constitution, the clause gives national laws the absolute power even when states have enacted a competing law.