Which of the following best describes proper signaling for a lane change?

Answer: A — Signaling early and changing lanes slowly and smoothly

Giving an early signal before a lane change and moving into the new lane slowly and smoothly communicates your intent and keeps the maneuver predictable for others. Signaling well in advance tells drivers behind you and in adjacent lanes what you plan to do, allowing them to adjust speed or position if needed. Moving gradually into the target lane reduces the risk of cutting someone off and gives you better control, which is especially important for larger vehicles or in heavy traffic. Not signaling or signaling at the last moment makes others react suddenly and can cause collisions. Signaling briefly and then stopping the change creates confusion about whether you intend to proceed. So the best approach is to signal early and change lanes in a calm, controlled manner.