The Qutub Minar was started by:
- Iltutmish
- Qutb ud-Din Aibak
- Alauddin Khilji
- Firoz Shah Tughlaq
Answer: Qutb ud-Din Aibak
Qutb ud-Din Aibak laid the foundation of Qutub Minar in 1192. Iltutmish completed three more storeys, and Firoz Shah Tughlaq added the fifth after lightning damage. It is the world's tallest brick minaret. [[1]]