Who was the founder of the Tughlaq Dynasty?

The Tughlaq Dynasty was a prominent Muslim dynasty of Turkic origin that ruled the Delhi Sultanate in medieval India. The founder of this dynasty was Ghiyasuddin Tughlaq, also known as Ghazi Malik. He ascended to the throne in 1320 AD, establishing the Tughlaq dynasty after overthrowing the Khilji dynasty. He is also credited with founding the city of Tughlaqabad.

The other options are incorrect:

• Firuz Shah Tughlaq and Muhammad bin Tughlaq were later rulers of the Tughlaq Dynasty, with Muhammad bin Tughlaq being Ghiyasuddin's son and successor.
• Ghiyasuddin Balban was a powerful ruler of the Mamluk (Slave) Dynasty, which preceded the Khilji Dynasty, thus ruling much earlier than the Tughlaqs.