What is the speed limit in a school zone in Ohio during restricted hours?

Answer: A — 20 mph

During restricted hours, the speed limit in a school zone in Ohio is 20 mph. This is for the safety of students and pedestrians. Options B, C, and D are incorrect because they exceed the speed limit during restricted hours and could potentially put others at risk. While outside of restricted hours, the speed limit may be higher, it is important to always follow the posted speed limit in school zones to ensure the safety of all individuals in the area.