The correct answer is: A. Guru Nanak Dev Ji.
Guru Nanak Dev Ji was the first Guru of Sikhism. He was born on Kartik Purnima, which is the full moon day in the month of Kartik, in 1469 in Rai Bhoi di Talwandi, now Nankana Sahib in Pakistan. He is considered to be the founder of Sikhism and is revered by Sikhs as the supreme Guru.
Saint Ravidas was a 16th-century Indian saint, poet, and social reformer. He is considered to be one of the most important figures in the Bhakti movement. He was born into a Dalit family and is considered to be the founder of the Ravidassia religion.
Saint Kabir was a 15th-century Indian mystic poet and saint. He is considered to be one of the most important figures in the Bhakti movement. He was born into a Muslim family but was not affiliated with any particular religion.
Guru Gobind Singh Ji was the tenth Guru of Sikhism. He was born on December 22, 1666, in Patna Sahib, India. He is considered to be the last human Guru of Sikhism and is revered by Sikhs as the supreme Guru.