What does a green arrow showing with a red light indicate?

A green arrow displayed with a red light indicates that you can proceed in the direction of the arrow, but you are required to yield to any other traffic or pedestrians that may be in your path. This means that even though the light is red for other directions, the green arrow gives you permission to make the turn while being cautious and ensuring that it's safe to do so. This traffic signal is designed to provide clear directions to drivers, allowing for turns to occur where it is safe while still maintaining overall traffic control on the road.

The other options do not apply in this scenario. A complete stop is not necessary if you are proceeding with caution after ensuring that it is safe to turn; the red light is specific to other traffic, not yours. Therefore, the green arrow modifies the typical meaning of a red light by allowing movement in the direction indicated by the arrow, while still requiring careful attention to the surrounding traffic conditions.