The construction of Qutub Minar was completed by______
A. Nasiruddin
B. Iltutmish
C. Qutubuddin Aibak
D. Baiban

Hint:
He was the third of the Mamluk rulers who managed the previous Ghurid regions in northern India. He was the main Muslim sovereign to run from Delhi, and is hence viewed as the powerful originator of the Delhi Sultanate.
In 1200 AD, Qutb al-Din Aibak, originator of the Delhi Sultanate, began development of the Qutb Minar. In 1220, Aibak's replacement and child in-law added three story's to the pinnacle.


Complete step by step solution:
Around 1192, Qutub-ud-Din Aibak imagined Qutub Minar, yet he just had the opportunity to finish the cellar. The development was later taken over by his replacement Iltutmish who built three additional accounts of the pinnacle. Firoz Shah Tuglak built the last two stories.
The Qutub Minar is a transcending 73 meter high pinnacle worked by Qutub-ud-Din Aibak in 1193. The pinnacle was worked to observe Muslim predominance in Delhi after the thrashing of Delhi's last Hindu standard.
Hence, the correct answer is option B.

Note:
The Qutub Minar is a transcending 73 meter high pinnacle worked by Qutub-ud-Din Aibak in 1193. The pinnacle was worked to observe Muslim strength in Delhi after the thrashing of Delhi's last Hindu ruler. This pinnacle is the most elevated pinnacle in India, complete with five stories and anticipating overhangs. The initial three accounts of the Qutub Minar are made of red sandstone and the last two are made of marble and sandstone.
The development of the Qutub Minar was begun by Qitub-ud-Din Aibak, yet he just built the cellar. The development of the pinnacle was later taken over by his replacement Iltutmish who built three additional accounts. The last two stories were finished by Firoz Shah Tuglak. The diverse building styles from the hour of Aibak to Tuglak are plainly noticeable in the Qutub Minar.
Aside from the pinnacle, the Qutub Minar complex contains the Quwwat-us-Islam Mosque (the first mosque to be implicit Quite a while), a 7 meter high iron column, the burial place of Iltutmish, Ala'i-Darwaza and the Ala'I Minar.