United states national

a. is not a u. s. citizen but still has the right to vote in federal elections.

b. refers to the inhabitants of the u. s. virgin islands, american, samoa, and swains island.

c. refers to former u. s. citizens who have lost their right to vote due to a felony conviction and who have not yet have their rights of citizenship restored to them by law.

d. has the right to enter the united states and work here, but does not have the rights of citizenship.

United States national refers to the inhabitants of the U.S. Virgin Islands, American, Samoa, and Swains Island. Thus Option B is the right answer.

Explanation:

US nationals are the people whose congenital ties are in American Samoa and Swain Islands. It also applies to the people who are born afar in a foreign nation to two US national parents or one foreign parents and one US parent.

The parents also required to show their permanent residence in United States to acquire the US nationality.US nationals does not possess the right of Enfranchisement and not allowed to participate in the ballot and cast a vote.  

US nationals are allowed to live anywhere in US and can receive the US citizenship through naturalization laws.  

cultural history is your answer