What must happen in step 2 for a bill to become a law a)the public debates the bill b)the president vetoes a bill c)the supreme court votes on the bill d)both houses of congress approve the bill

technically step 2 is the bill would be assigned to a committee and the main committee can and might assign it to a subcommittee.

With what you have if I place in an order I would have to do with D.

a.) are both appointed for life

sorry its a lil late, but the answer is d. the rotation 180° about z'