Answer:
D. The experience of a fellow student.
Step-by-step explanation:
In his letter to Principal Havens, Adam Michaels main purpose was to try to make the principal talk to the bus driver Mrs. Larson so that the students may be able to use their cell phones. This is needed because not only is it after-school but they also need to contact their parents about their whereabouts.
Moreover, he also stressed the need for permission to be allowed to use cellphones because most parents, like Alyssa's, need to talk to their children to buy something on the way or let them know if there is an emergency at home, etc. Such scenarios make it necessary to be able to be contacted so that nothing bad may come upon them or they may not miss anything. By giving an example of a friend's experience in his letter, Adam Michaels appeals that cellphones should be allowed to be used on the bus.