The correct answer is: a) Sufi saints.
Urs celebrations are annual festivals held in the memory of Sufi saints. They are usually held in the saint’s tomb or shrine, and are marked by music, dancing, and feasting. Urs celebrations are an important part of Sufi culture, and are a way for Sufis to commemorate their saints and to connect with their spiritual heritage.
Option b) is incorrect because Buddhist monasteries are not associated with Urs celebrations. Buddhist monasteries are places where Buddhist monks live and practice their religion. They are not associated with Sufi saints or with Urs celebrations.
Option c) is incorrect because Hindu deities are not associated with Urs celebrations. Hindu deities are the gods and goddesses of Hinduism. They are not associated with Sufi saints or with Urs celebrations.
Option d) is incorrect because Sikh Gurus are not associated with Urs celebrations. Sikh Gurus are the founders of Sikhism. They are not associated with Sufi saints or with Urs celebrations.