Explanation:

- Powa Mecca: Located in Assam, India, it is the tomb of a prominent religious figure.

- Option 1: Pir Giasuddin Auliya

- ?? Correct Answer: This is indeed the saint whose tomb is located in Hajo, Assam, known as Powa Mecca.

- The site is significant for its blend of Hindu and Muslim faiths.

- Option 2: Shujauddin Mohammed Shah

- Not related to the Powa Mecca in Assam. He was a different historical figure with no connection to this site.

- Option 3: Khwaja Bande Nawaz

- A revered Sufi saint from Gulbarga, his tomb is in Karnataka, not Assam.

- Option 4: Sheikh Salim Chisti

- A well-known Sufi saint buried in Fatehpur Sikri, Uttar Pradesh.