Describe a safe way for students to board a school bus.

The best approach for students boarding a school bus is to wait until the bus has come to a complete stop, the door is open, and the flashing lights are activated, before approaching. This procedure signifies that it is safe to walk towards the bus, as the bus driver is making sure that the area is clear of any oncoming traffic. Using the handrail while boarding adds an additional layer of safety by helping students maintain their balance and prevent falls as they enter the bus. This method underscores the importance of being aware of surroundings and ensuring safety protocols are followed.

The other choices present less safe practices. Running towards the bus can lead to accidents as students might not be watching for traffic or obstacles. Engaging in conversation before boarding could distract students from the boarding process and lead to unsafe actions. Standing in front of the bus until signaled by the driver can create confusion and is not a standard procedure, as students should always wait for the bus to come to a complete stop before approaching it. Overall, option C emphasizes safety and awareness, which are crucial for preventing accidents during school bus boarding.