What safety feature should a bus driver use when making a turn?

Answer: D — All available indicators

Using all available indicators when making a turn is essential for ensuring the safety of both the bus driver and other road users. This approach includes utilizing signal lights to communicate intentions, using the horn to alert nearby vehicles or pedestrians when necessary, and checking mirrors to maintain awareness of surrounding traffic. Signal lights are crucial for indicating a driver's intentions to turn, which prepares other drivers and pedestrians for the bus's movements. The horn can serve as a useful warning tool if there are any immediate hazards that might not be apparent to others. Finally, relying on mirrors helps the driver observe blind spots and ensure that the path is clear before executing the turn. Collectively, these features promote safe navigation and contribute to minimizing the risk of accidents.