When you think of the word "alien," Martians and flying saucers probably come to mind. But "alien" is also used to describe people! It refers to those in a country who are not citizens of that country. For example, aliens include tourists, people who have student visas to study in a foreign country, and those who have gained permanent residence in a country that is not their homeland. A visa is a legal paper that says a person has permission to enter a foreign country.

How does the organizational structure of this passage support the author's purpose?
A.
It tries to convince readers to become aliens in a foreign country.
B.
It provides a definition of the word "alien" and lists some examples.
C.
It arranges facts about alien standing from least to most important.
D.
It explains the effects of illegal immigration to the U. S. economy.