Which Sultan of Delhi declared himself as a lieutenant of Caliph?

Mohammad Tuglaq

The correct answer is Option 4- Mohammad Tuglaq

Muhammad bin Tughluq, commonly known as Muhammad Tughlaq, was the Sultan of Delhi who declared himself as a lieutenant of the Caliph. Muhammad Tughlaq ruled the Delhi Sultanate from 1325 to 1351.

In his attempt to establish his authority, Muhammad Tughlaq sought recognition from the Abbasid Caliphate in Baghdad. By declaring himself as the lieutenant of the Caliph, he aimed to legitimize his rule and enhance his prestige as a ruler. This declaration was part of his broader efforts to centralize power and assert his authority over the vast territories of the Delhi Sultanate.