Question

the car behind you begins to pass you. you should
maintain your speed so traffic will flow smoothly
pull to the right and stop so he can pass
slow down slightly and stay in your lane
blow your horn to allow him to pass

Explanation:

This is a driving - related question about the correct action when a car behind starts to pass. In driving rules, when another vehicle is passing, the correct action is to slow down slightly and stay in your lane to ensure the passing vehicle has enough space and a safe environment to complete the passing maneuver. Maintaining speed might not give enough space, pulling to the right and stopping is unnecessary in normal passing situations, and blowing the horn is not the appropriate action for allowing a pass.

Answer:

Slow down slightly and stay in your lane (the option with the blue background: "Slow down slightly and stay in your lane")