Read this paragraph. 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 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 unhealthy food offered at the vending machine the hunger that distracts students between meals the trash associated with vending machine snacks the challenges of monitoring students during a trial period