The formulation of Din-i-Ilahi by Emperor Akbar had the basic purpose of establishing universal faith. Din-i-Ilahi aimed to create a new religion that would blend different elements of existing religions to promote unity and harmony among people of diverse backgrounds. It sought to transcend religious divisions by incorporating aspects of Islam, Hinduism, Christianity, Zoroastrianism, and other faiths. The goal was to create a universal belief system that would bring together people from different religions and foster a sense of brotherhood. However, it is important to note that Din-i-Ilahi did not gain widespread popularity and did not have a lasting impact on Indian society. Alert - correct answer should be option-3: universal harmony, as it more accurately captures the essence of Akbar`s objective with Din-i-Ilahi.