Nadia is writing an argumentative essay on why schools should not allow cell phones in the classroom. Which of the following is an effective claim for her argument?

I think students should only use cell phones during lunch breaks.
Cell phones are a distraction and should be banned in schools.
Cell phones are essential for communication and research.
Teachers should totally throw away cell phones if students bring them to school.

"Cell phones are a distraction and should be banned in schools."