What's the most important factor affecting the speed you choose to drive? What's the most important factor affecting the speed you choose to drive?

• Possible answers:

   
• A. You should drive at the speed limit wherever possible
• B. You should drive at a speed that doesn't impede other road users
• C. You should be able to stop within the distance you can see to be clear
• D. You should keep up with the traffic in front