The students of Valencia High adore the school vending machine. It has been in operation as long as the school, providing a variety of snacks, from crackers to granola bars to juices and even fresh fruit. These snacks sustain students throughout the day and help them ward off hunger during after-school activities. The teachers and custodians are not as enthusiastic. They complain about the wrappers, containers, and peelings that litter the floors and hallways. Many staff members believe that a trial period should begin in which students must prove that they can keep the school clean or lose the privilege of the vending machine. What problem is described in the paragraph

The answer is: The trash associated with the vending machine.

Explanation:

When you read the excerpt above, you see what the problem is especially in these lines: "The teachers and custodians are not as enthusiastic. They complain about the wrappers, containers, and peelings that litter the floors and hallways."

The wrappers, containers and peelings i.e trash were clearly a source of concern to the teachers and custodians. To the point that they wanted a trial period where students have to keep the school clean or risk losing their vending machine.

Putting the above in mind, you can therefore see that the answer is: the thrash associated with the vending machine.

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i think i seen this before