Read this passage from "The American Dream." America is essentially a dream, a dream as yet unfulfilled. It is a dream of a land where men of all races, of all nationalities and of all creeds can live together as brothers. The substance of the dream is expressed in these sublime words, words lifted to cosmic proportions: "We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable rights, that among these are life, liberty, and pursuit of happiness."

The sentence that includes the phrase “that all men are created equal” is an example of

a reason.
a claim.
evidence.
rhetoric.