What is this driver signalling?

A)That they are going to turn left.
B)That they are going to continue straight ahead.
C)That they are going to turn right.Correct
When the driver extends their left arm at a 90° angle, as shown in the photograph accompanying the question, they are indicating their intention to turn right or move towards that side.
If the driver extends their left arm horizontally, they are indicating their intention to turn left or move laterally to that side.
If the driver extends their left arm horizontally with the palm of the hand facing rearward, they are indicating their intention to move backwards.
When the driver moves their arm alternately up and down with short, rapid movements, they are indicating their intention to reduce speed considerably or bring the vehicle to a stop.
If the driver extends their left arm horizontally, they are indicating their intention to turn left or move laterally to that side.
If the driver extends their left arm horizontally with the palm of the hand facing rearward, they are indicating their intention to move backwards.
When the driver moves their arm alternately up and down with short, rapid movements, they are indicating their intention to reduce speed considerably or bring the vehicle to a stop.