Explain the general process of classical conditioning IN DETAIL

d is the answer. leo should include the source.

number 1 is a)

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.

the answer is actually b.   as habitats are destroyed, animals and plants may become extinct.   , according to edge nuity