When alcohol is consumed, are there alterations in vision?
A)No, it only affects motor skills.
B)Yes, but only with alcohol levels above those permitted.
C)Yes, tunnel vision may appear.Correct
# Explanation: Alcohol and Visual Alterations
Alcohol directly affects the central nervous system, producing multiple alterations in vision even with small amounts. One of the most characteristic is **tunnel vision**, in which the peripheral visual field is reduced, preventing proper viewing of the sides of the road. In addition, alcohol also affects visual accommodation, focusing ability and contrast sensitivity, significantly increasing the risk of accidents.