Final answer:
When driving at night, it is important to travel at a speed that allows you to stop within the distance you can see.
Step-by-step explanation:
When driving at night, it is important to travel at a speed that allows you to stop within the distance you can see. This means you should adjust your speed based on the visibility conditions. If there are no street lights or other sources of light, you may need to drive slower to ensure you can see and react to any obstacles in your path. So, option b is the correct answer.