Which of the following statements about "Life Without Gravity" explains why it is an expository essay?
A.
It is a short work of nonfiction that does not express the writer's opinion.
B.
It is a short work of nonfiction that uses examples to make its points.
C.
It is a short work of nonfiction that explains something in an amusing way.
D.
It is a short work of nonfiction that explains a topic