Final answer:
Drivers must not drive past a road sign with the 'wrong way' symbol.
Step-by-step explanation:
The road sign with the 'wrong way' symbol indicates that drivers must not drive past this sign. Option C is the correct answer. When drivers see a wrong way sign on the road, it communicates a very clear instruction: they must not drive past this sign. It's a warning that the driver is going in the opposite direction of permitted traffic flow and is at risk of causing a head-on collision. If a driver inadvertently enters a one-way street in the wrong direction and encounters this sign, the correct action is to stop and safely turn around when possible, taking care to not proceed further in the wrong direction or enter the flow of oncoming traffic.
In cases of seeing emergency vehicles or specific road situations, different actions might be advised, but with respect to a wrong way sign, the key is to prevent entering or proceeding in an area where the vehicle's presence poses a significant danger to oneself and others.