What is the best definition of a resident alien
a. a resident alien is person who is in a country but is not a citiz of that country
b. a resident alien is a person who has an immigrant good has became a citizen of the country
c. a resident alien and the person who wants to move to another country for school
d. a resident alien is a person who hat was living in another country illegally and has been deported

The correct answer is - A. A resident alien is person who is in a country but is not a citizen of that country.

A resident alien is a person that is a foreign national, but is living in another country where the person doesn't posses citizenship. There's millions of people around the world that fall into the resident alien category, some of which are people that want to get citizenship after they are able to, some are temporary workers, some are students.