What is the main impact of Jefferson's use of the words self-evident in the following sentence in paragraph

two? 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 the pursuit of Happiness.
A. to invite the reader to analyze the merits of his arguments
B. to place the declaration in the context of the history of Western Civilization
C. to assume the obviousness of the claims being made within the declaration
D. to acknowledge each reader's right to define truth

C. to assume the obviousness of the claims being made within the declaration