What actions are prohibited when making a left turn at a red light?

Answer: B — Turning left on red unless turning from a one-way street

Turning left on red is allowed only in specific circumstances, which is why the statement regarding turning left on red unless turning from a one-way street is the correct answer. In Ohio, just like in many other states, drivers are allowed to turn left at a red light only if they are turning from a one-way street onto another one-way street. This rule exists to promote safe traffic flow while allowing for some flexibility in left turns. Turning left from a two-way street at a red light is not permitted because it increases the risk of colliding with oncoming traffic. Similarly, making a U-turn at a red light is also not allowed as it poses safety hazards and can confuse other drivers. Lastly, stopping and waiting for a green light may not be a prohibited action in itself; however, it doesn't pertain to the rules of making a left turn at a red light, which specifically calls for adherence to certain rules about directional changes. Understanding these guidelines is essential for safe driving and adhering to traffic laws.