What is another term for an illegal alien in the U.S.?

A. a temporary resident
B. an undocumented non-U.S. citizen
C. a lawful permanent resident
D. a returning resident

B. an undocumented non-U.S. citizen

B. an undocumented non-U.S. citizen

The correct answer is B. an undocumented non-U.S. citizen. An undocumented non-U.S. citizen is a term used to describe someone who is living in the United States without proper legal authorization or documentation. It is important to note that the term "illegal alien" has become controversial and is now considered by some to be derogatory. As language evolves, it is important to use accurate and respectful terminology.