What does a green arrow on a traffic light allow you to do?

Answer: C — Safely turn in the direction of the arrow

A green arrow on a traffic light signals that vehicles may proceed in the direction indicated by the arrow, while also ensuring that the movement is safe. This signal indicates that you have the right of way of any oncoming traffic or pedestrians who may be crossing. When a green arrow is displayed, drivers can safely turn in the direction of the arrow, as it specifically provides permission to do so without the usual conditions that might apply at a regular green light, such as yielding to pedestrians or other vehicles. The ability to turn in the direction of the green arrow without hesitation promotes smoother traffic flow and reduces the chances of accidents, as it clearly communicates to drivers their permitted actions on the road.