When stopping at a traffic signal with a lane used for turning left, you should

Answer: A — slow down and turn from the lane closest to the opposite side of the roadway.

When stopping at a traffic signal with a lane used for turning left, the most appropriate option is to slow down and turn from the lane closest to the opposite side of the roadway. This is because turning left from the closest lane allows for a smoother and safer turn as it follows the flow of traffic and prevents any potential collisions with oncoming traffic from the opposite side of the roadway. Stopping and then turning from the lane closest to the opposite side of the roadway (option B) may be a close second, but it may also impede the flow of traffic and cause confusion for other drivers. Stopping in the middle of the road (option C) or speeding up and making the turn quickly (option D) are both dangerous options that go against traffic laws and could result in accidents.