Undocumented aliens are people who cross the border illegally or who _____.
a. stay past their time allowed for their visits
b. have infectious diseases
c. give up their citizenship in another country
d. do not speak english
It would be A. Legal citizens can have disease, You can give up your citizenship in another country but that doesn't mean you're a legal United States citizen, and it cannot be D because there's no official language for the United States so that doesn't make sense.
