Final answer:
Driving at the proper speed means driving within the driver's abilities and/or the vehicle's capabilities, according to the weather conditions, and within the speed limits of the roadway.
Step-by-step explanation:
The correct answer is d. all of the above.
Driving at the proper speed means driving within the driver's abilities and/or the vehicle's capabilities, according to the weather conditions, and within the speed limits of the roadway. It is important for drivers to adjust their speed based on these factors to ensure safety on the road.
For example, if a driver is not comfortable driving at high speeds, it is important for them to drive at a slower speed that they feel comfortable with, regardless of the speed limit of the roadway.