Final answer:
The correct answer to the road sign question is C) The road curves left ahead. A safe speed to travel is 35 mph, as this speed is recommended for safety on a curve.
Step-by-step explanation:
The road sign indicates the recommended safe speed at which you can navigate a turn or curve in the road. Looking closely at the options provided, and understanding that speed limits and recommendations are there to ensure the safety of passengers and pedestrians alike, we can discern that the correct option is:
C) The road curves left ahead. A safe speed to travel is 35 mph.
This is based on the concept of ideal speed, which is the maximum safe speed at which a vehicle can turn on a curve without relying solely on the friction between the tire and the road. It is critical to understand that speed limits, whether they are regulatory (de jure) or suggestive (de facto), provide guidance to motorists on how to navigate roads safely and legally.