What climate would not be found in africa

From which of the following literary works is this quotation most likely taken?

This law states that the "chinese laborers to this country endanger the good order of certain localities" in the united states. which of these would represent a "locality" that would most likely have wanted this law created and passed? a) dallas b) chicago c) atlanta d) san francisco

How should the student cite this source using mla citation format?