At this intersection, which signal must the blue vehicle obey in order to turn right?

A)The stop sign, because it is located on the left.
B)The stop sign, because it is the most restrictive.
C)The give way sign.Correct
When different signals are present on the left and right, vehicles wishing to turn right must obey the signal on the right, and vehicles wishing to turn left or go straight must obey the signal on the left.
If there is only one signal on the right, all vehicles must comply with that signal, regardless of the direction they wish to take.
If there is only one signal on the left, those wishing to turn left or go straight must comply with it. Those wishing to turn right must comply with the general right-of-way rule: give way to the right.
In the case of Photo 1, the red and green vehicles must stop to comply with the red traffic light, while the blue vehicle, if intending to turn right, may proceed by giving way to its right, and must stop if it wishes to go straight, as the traffic light also applies to it in that direction.
If there is only one signal on the right, all vehicles must comply with that signal, regardless of the direction they wish to take.
If there is only one signal on the left, those wishing to turn left or go straight must comply with it. Those wishing to turn right must comply with the general right-of-way rule: give way to the right.
In the case of Photo 1, the red and green vehicles must stop to comply with the red traffic light, while the blue vehicle, if intending to turn right, may proceed by giving way to its right, and must stop if it wishes to go straight, as the traffic light also applies to it in that direction.