What does an officer indicate by moving their arm up and down alternately?
A)That we must stop.
B)That we must reduce speed.Correct
C)That we must turn right.
An officer moving their arm up and down alternately indicates that we must reduce speed.
If they did so by swinging a red or yellow light, it would require us to stop.
If they did so by swinging a red or yellow light, it would require us to stop.