When approaching a school bus with activated flashing lights, which action is appropriate?

Stopping until the lights turn off is the appropriate action when approaching a school bus with activated flashing lights. This law is in place to ensure the safety of children who may be getting on or off the bus. The flashing lights indicate that the bus is either picking up or dropping off students, and it is crucial for all vehicles to come to a complete stop to protect children in the vicinity.

Other options may seem reasonable but do not prioritize the safety of the students effectively. Approaching cautiously does not provide the necessary precaution to guarantee the safety of children and may result in an unsafe situation. Passing at a safe distance is also inadequate, as it could lead to a dangerous scenario where children might unexpectedly enter the roadway. Using your horn to alert the driver could create confusion and distraction, potentially endangering children as they cross the street. Thus, stopping until the lights are no longer flashing is the best and safest response in this situation.