During the day it is mandatory to switch on the appropriate lighting when driving...
A)over a movable bridge.
B)in a lane reserved for high-occupancy vehicles (HOV).
C)through underpasses or stretches of road affected by the "Tunnel" sign.Correct
# Explanation
Mandatory lighting during the day is specifically required in **tunnels and underpasses** because these areas have reduced natural light, which makes it difficult for your vehicle to be visible to other drivers. This safety measure increases mutual visibility between vehicles even during daytime.