How should a driver signal a right turn?

Answer: B — By using the right turn signal or extending the right arm

To signal a right turn, a driver should use the vehicle's right turn signal in addition to, or as an alternative to, extending the right arm out of the window. Using the right turn signal is crucial because it communicates the driver’s intention to turn to other road users, including pedestrians and cyclists, and it adheres to traffic laws, enhancing overall road safety. Extending the right arm is a traditional hand signal that serves as an additional method of indicating the intention to turn, particularly if the turn signal is not functioning or for emphasis. This dual approach ensures maximum visibility and clarity. The other methods listed, such as honking the horn or tapping the brakes repeatedly, do not effectively communicate the intention to turn and may confuse other drivers or lead to misinterpretation of the driver's actions. Hand signals alone lack the modern visibility provided by vehicle indicators and should not be the only form of signaling used.