Final answer:
2) 25 mph. The speed limit on school, business, and residential zones is 25 mph.
Step-by-step explanation:
The correct speed limit on school, business, and residential zones is 25 mph. These zones are designated areas where there is a higher concentration of pedestrians or where children may be present, so lower speed limits are implemented to ensure safety. It is important to follow these speed limits to avoid accidents and potential legal ramifications.