In situations where a police officer controls traffic at an intersection, to which signals must drivers obey?

Answer: B — The police officer's signals

When a police officer is controlling traffic at an intersection, drivers must obey the signals given by the officer. This is because the officer's signals take precedence over traffic lights and signs, as they are specifically trained to manage traffic flow and ensure safety in real-time situations. The officer can assess the immediate conditions and adjust their signals accordingly, making their directions crucial during emergencies or unusual traffic circumstances. While traffic lights and posted signs are essential for routine traffic management, the presence of a police officer indicates a specific directive that may override standard signals, highlighting the importance of following law enforcement instructions for the safety of all road users.