What is the purpose of the code of chivalry

a. to protect nobles from the king

b. to in sure peasants have land to work

c. to collect taxes from knights

d. to give knights standards of behavior

the answer is For give knights standards of love and behavior and also quantities.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.