Among other effects, alcohol produces...
A)an increase in the field of vision.
B)a positive effect on driving.
C)a reduction in the field of vision.Correct
Alcohol, among other effects, causes us to perceive traffic signs and the lights of traffic signals or other vehicles more poorly, to misjudge distances and the speed at which other vehicles are travelling, to be more sensitive to glare, and we may more easily experience the tunnel vision effect, which is when we lose peripheral vision and can only see the centre of the road clearly. (This phenomenon also occurs with speed.)