Final answer:
Having a gun may end up with significant legal problems if the distance to the nearest public school is less than 1,000 feet.
Step-by-step explanation:
The answer to the question is 4) 1,000 feet.
In the United States, there are laws regarding the possession of firearms near public schools. The Gun-Free School Zones Act prohibits individuals from possessing a firearm within 1,000 feet of a school. If someone is found in possession of a gun within this distance, they may face significant legal problems.