The correct answer is "टीपू सुल्तान" because out of the given options, Tipu Sultan is the only one who was a Sultan. Tatyatopé was a commander in the Maratha Empire, Nana Sahib was a leader in the Indian Rebellion of 1857, and Maharana Pratap was a Rajput king. Only Tipu Sultan held the title of Sultan, making him the correct answer.