What is the significance of using turn signals while driving?

Answer: B — To indicate a vehicle's intention to turn or change lanes

Using turn signals while driving is crucial for indicating a vehicle's intention to turn or change lanes. This communication is essential for maintaining safety on the road, as it allows other drivers and pedestrians to anticipate your movements. By signaling, you reduce the risk of collisions and ensure a smoother flow of traffic. It helps to establish predictability for all road users, which is a fundamental aspect of safe driving practices. While there are other considerations that might impact driving—such as the role of traffic police or vehicle aesthetics—these do not relate directly to the primary function of turn signals. Fuel efficiency is also independent of whether or not a vehicle uses turn signals, as signals are purely a means of communication rather than affecting the vehicle's mechanical efficiency. Thus, the importance of turn signals is entirely grounded in their ability to convey intentions clearly on the roadway, promoting overall safety.