Final answer:
Adjusting speed is necessary before entering a curve to ensure safe navigation and control.
Step-by-step explanation:
The correct answer is d) Adjust speed. Before entering a curve, it is important to adjust your speed to ensure that you can safely navigate the curve without losing control of your vehicle. This means slowing down to an appropriate speed that allows you to maintain control and stay within your lane throughout the curve.
For example, if you are driving on a highway and approaching a sharp curve, you should start decelerating before entering the curve. This will help you maintain control and prevent your vehicle from skidding or sliding off the road.
By adjusting your speed, you are ensuring that you can safely navigate the curve and avoid any potential accidents or loss of control.