You might change lanes when:

Answer: A — Moving from one lane to another.

Changing lanes means moving your vehicle from one lane to another while you’re still on the same road. You do this to pass slower traffic, set up for a turn, or position yourself for a safer or smoother flow of traffic ahead. The scenario described fits because it’s about shifting from one lane to another, which is exactly what a lane change is. Entering the freeway from an on-ramp is merging into traffic, not simply switching lanes; exiting the freeway or entering a road from a curb or shoulder involves different maneuvers, not the act of changing lanes on the same roadway.