Final answer:
A motorist must stop for specific safety reasons such as when a school bus is picking up or dropping off children with flashing red lights or when ordered by a police officer. Other scenarios such as checking messages or admiring scenery are not legitimate reasons to stop while driving. While the scenario of a motorist needing to stop to check their text messages (A) or to admire a scenic view (D) are not legally required or for safe reasons, the correct options where a motorist must stop are mainly for safety reasons, like when a school bus has its red lights flashing while picking up or dropping off children (C), or when a police officer signals to stop (E).
Step-by-step explanation:
The question asks to list five reasons why a motorist must stop. While some mentioned reasons like checking text messages or admiring a scenic view are incorrect and unsafe driving behaviors, there are legitimate circumstances where a motorist is required to stop. One such situation is when a school bus is picking up or dropping off children with flashing red lights. This is an important safety rule designed to protect the well-being of children.
Additionally, it's mandatory to stop when signaled by a police officer. This is a clear directive that must be followed by all drivers. Approaching a green traffic light, generally, does not require a driver to stop; however, all motorists must abide by the traffic signals and signs designed to manage the flow of traffic safely. For instance, a red light or a stop sign requires a motorist to stop to prevent accidents and ensure that pedestrians can cross the road safely. Situations involving emergency vehicles, like an ambulance or fire truck, also demand that motorists stop and clear the way. Thus, while the scenario of a motorist needing to stop to check their text messages (A) or to admire a scenic view (D) are not legally required or safe reasons, the correct options where a motorist must stop are mainly for safety reasons, like when a school bus has its red lights flashing while picking up or dropping off children (C), or when a police officer signals to stop (E).