What should you do if you approach a yield sign?

Answer: C — Slow down and proceed cautiously

When approaching a yield sign, it is important to slow down and proceed cautiously. A yield sign indicates that you must yield the right-of-way to other drivers or pedestrians. If you always stop before the yield sign (option A), you may be causing unnecessary traffic delays if there is no incoming traffic. Increasing your speed and driving cautiously (option B) would go against the specific instruction of the yield sign. Driving through the yield sign as quickly as possible (option D) disregards the purpose of the sign and can be dangerous for other drivers and pedestrians. Therefore, the best option is to slow down and proceed cautiously (option C) in order to yield the right-of-way and safely navigate through the intersection.