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

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.

the exclusive possession or control of the supply or trade in a commodity or service.