At a yield sign with no cross traffic, you should:

Answer: B — Proceed when safe.

A yield sign means you must slow down and be ready to stop to let other road users go first. If there’s no cross traffic or pedestrians approaching, you can proceed when the way is clear. The responsibility is to give the right-of-way, not to assume you can speed through. Always watch for anyone who might appear, and only proceed if it’s safe. A stop is not required here, and making a U-turn isn’t dictated by a yield sign.