The correct answer is (a) Shaikh Muinuddin Chisti.
Shaikh Muinuddin Chisti was a Sufi saint who lived in the 12th century. He was born in Chishti Sharif, a village in the Indian state of Rajasthan. He is considered to be the founder of the Chishti order of Sufism in India.
Shaikh Muinuddin Chisti came to India in 1192, after the Muslim conquest of the country. He settled in Ajmer, Rajasthan, where he established a khanqah (a Sufi monastery). He attracted many disciples, both Hindus and Muslims.
Shaikh Muinuddin Chisti was a preacher of peace and tolerance. He taught that all religions are paths to God. He also taught that Muslims should respect the customs and traditions of the Hindus.
Shaikh Muinuddin Chisti died in 1236. He is buried in Ajmer, where his tomb is a popular pilgrimage site.
The other options are incorrect because:
(b) Hamiduddin Nagauri was a Sufi saint who lived in the 13th century. He was a disciple of Shaikh Muinuddin Chisti.
(c) Kutubuddin Bakhtiyar Kaki was a Sufi saint who lived in the 12th century. He was a disciple of Shaikh Muinuddin Chisti.
(d) Nizamuddin Aulia was a Sufi saint who lived in the 13th century. He was a disciple of Shaikh Fariduddin Ganj Shakar.