Under Mississippi law, who cannot possess a firearm?

The correct choice encompasses a comprehensive understanding of Mississippi law regarding firearm possession. Under Mississippi law, individuals who have been convicted of a felony are explicitly prohibited from possessing firearms. This restriction is grounded in the belief that individuals who have demonstrated criminal behavior may pose a risk to public safety if granted access to firearms.

In addition to individuals with felony convictions, Mississippi law also restricts firearm possession for specific groups, including those under the age of 18 and individuals deemed mentally incompetent. These additional restrictions highlight the state's focus on safeguarding against potential dangers associated with firearm access among these populations.

Thus, while the individual with a felony conviction is a significant category of prohibited firearm possessors, they are not the only group affected by these laws. Therefore, when considering the complete context of firearm possession restrictions in Mississippi, the most accurate response includes all specified categories, making it clear that the correct answer is inclusive of all the affected groups.