Explanation:

- Option 4: Daulatabad

- Muhammad-bin-Tughlaq, a Sultan of Delhi, moved his capital from Delhi to Daulatabad in the Deccan region. He intended to better control over his empire and protect it from northwestern attacks.

- Option 1: Chunar

- Chunar, located in present-day Uttar Pradesh, was known for its fort but was not involved in Muhammad-bin-Tughlaq's capital relocation.

- Option 2: Jaunpur

- Jaunpur was established later by the Tughlaq dynasty as a separate Sultanate but was not considered for the capital shift.

- Option 3: Murshidabad

- Murshidabad became prominent in a later period, especially during the Mughal era in Bengal, and was not associated with Tughlaq's decisions.