Final answer:
When approaching a curve with a recommended speed limit, it is important to slow down and approach the curve with caution.
Step-by-step explanation:
When approaching a curve and seeing a recommended speed limit, it is important to slow down and approach the curve with caution (option 1). This is because curves can be dangerous, especially at higher speeds. By slowing down, you give yourself more control over the car and reduce the risk of losing control or skidding.