Gun show loophole, gun law loophole, Brady law loophole (or Brady bill loophole), private sale loophole, and private sale exemption in the United States is the sale of firearms by private sellers, including those done at gun shows, dubbed the ''secondary market''. A loophole in federal law exists, under which ''any person may sell a firearm to an unlicensed resident of the state where they reside, as long as they do not know or have reasonable cause to believe the person is prohibited from receiving or possessing firearms''.
Answer this question, making sure that the answer is supported by the text: do you need a license to buy a gun at a gun show?

Pick from: (a). no. (b). yes.
(a).