4. One way a citizen can change a law is to do which of the following?

A bill can be introduced in either chamber of Congress by a senator or representative who sponsors it ... Then both chambers vote on the same exact bill and, if it passes, they present it to the president. The president then considers the bill.

Explanation:

This is correct!

File an initiative or referendum if you're in a state where citizens can. Check to see you your state is one of them. In these states, you can file your intention to have your law on the ballot, then gather signatures, and finally file the petition with the signatures with the law. Then it will be put on the ballot.