Answer: what...? Make this more clear
Explanation:
<span>He justified the need for a national bank through the "necessary and proper" clause in the Constitution. While there might not have been explicit language granting the creation of a national bank, the clause gave the Congress the ability to do whatever it needed to as a way of carrying out the powers that were explicitly enumerated.</span>
c. assembly line
More precisely, it would be the moving assembly line, but Ford is so strongly associated with assembly lines, that I believe that's what intend to say here.