Answer:
Laser printer
Explanation:
This is a guess based on experience, but laser printers have rollers, drums, and other various parts that need periodic replacement.
See page 87 of https://www.laserpros.com/img/manuals/hp-manuals/hp-lj-4100-manual.pdf for an example.
They won’t let it be on your computer, knowing it well give you answers
1. Horsing around can lead to breaking equipment in the classroom or somebody getting hurt
2. leaving your backpack on the floor can cause someone to fall
3.something unexpected may happen and worsen the problem
4. it can corrupt the computer's files and deleted unsaved work.
if you want the sentences to be longer, add some words to them and make the message the same.