Final answer:
The correct position of the front wheels while negotiating a curve is to be close to the center line for a right curve and close to the right edge for a left curve. This allows for a proper turning radius and helps manage centrifugal force on flat roads.
Step-by-step explanation:
When negotiating a curve, ideally, the position of your front wheels should contribute to the safest and most effective maneuver through the curve. The correct answer to the question is d. b. and c. are correct. This means that when turning right, the front wheels should be closer to the center line to allow for a wider turning radius, and when negotiating a curve to the left, the wheels should be closer to the right edge of the lane for the same reason. When dealing with a banked curve, the road itself assists the vehicle in maintaining the turn with minimal lateral force felt by the passengers, unlike on flat roads where drivers must adjust their position more acutely to manage centrifugal force.