You are driving on a road with lane markings, and there is a left-turn-only arrow in your lane. What should you do?

Do not signal
Go straight
Turn left
Turn right

If you are driving on a road with lane markings and there is an arrow indicating that your lane can only turn left, you should follow that instruction and turn left. It is also advisable to use your turn signal to indicate your intention to turn left before making the maneuver.