Which of the following is a sign that it is appropriate to make a U-turn?

Answer: B — No sign prohibiting it at the intersection

Making a U-turn is permissible when there is no sign prohibiting it at the intersection. This indicates that local traffic laws allow for such a maneuver in that specific area. U-turns are often restricted in certain locations for safety reasons, such as near intersections with heavy traffic, school zones, or places where visibility is limited. Therefore, the absence of prohibitive signage means that it is legally acceptable to perform a U-turn. In contrast, heavy traffic on main roads and rainy weather conditions can make executing a U-turn unsafe, even if there are no signs against it. Being late to an appointment is not a valid reason to perform a U-turn; rather, it emphasizes the importance of obeying traffic laws and prioritizing safety over urgency.