Final answer:
When a worker on the road is holding a circular yellow sign with the word SLOW, you should proceed slowly, following the worker's instructions for safety.
Step-by-step explanation:
When a worker on the road in front of you is holding a circular yellow sign with the word SLOW, you should:
- A. Proceed slowly. This means that you should continue driving, but at a reduced speed.
- B. Proceed at the speed limit is not the correct answer, as you should be slowing down when you see the sign.
- C. Stop and wait until it is safe to proceed slowly. While this option is not required, it is always a good idea to exercise caution and stop if necessary.
Remember, the worker is signaling for you to slow down, so it is important to follow their instructions to ensure the safety of everyone on the road.