Final answer:
The driver should maintain a slower speed and stay within the lane while rounding a curve to the right on a two-lane highway with a tractor-trailer, prioritizing road safety over speed.
Step-by-step explanation:
When rounding a curve to the right on a two-lane highway with a tractor-trailer, best practices for road safety suggest that the driver should maintain a slower speed and stay within the appropriate lane. Unlike race car drivers who cut the corner on a racetrack to maintain a high speed, common road drivers must consider safety first. Therefore, the correct answer is to keep a moderate or slower speed and stay well within the lane to allow for sufficient reaction time and to handle any potential issues that may arise with the tractor-trailer, such as sway or wide turns.