According to john rawls, people in "the original position" choose the principles of justice solely on the basis of a. social utility. b. their religion. c. their intuitive knowledge of the natural rights of all human beings. d. self-interest.

According to John Rawls, people in "the original position" choose the principles of justice solely on the basis of  self-interest. Correct D
In Rawls's theory, Justice as Fairness, the original position is the central feature.
Rawls suggests that you imagine yourself in an original position behind a veil of ignorance.

Ithink the answer you are looking for is (b).