The correct answer is D. Red Fort Complex.
Diwan-i-Khas is a hall in the Red Fort Complex in Delhi, India. It was built by Mughal emperor Shah Jahan in the 17th century. The hall is made of white marble and red sandstone and is decorated with intricate inlay work. It was used by the emperor to hold court and to meet with his ministers.
Humayun’s Tomb is a mausoleum located in Delhi, India. It was built by Humayun’s wife, Bega Begum, in the 16th century. The tomb is one of the earliest examples of Mughal architecture in India.
The Mahabodhi Temple Complex is a UNESCO World Heritage Site located in Bodh Gaya, India. The complex is home to the Mahabodhi Temple, which is a Buddhist temple that marks the spot where the Buddha attained enlightenment.
The Qutub Minar is a minaret located in Delhi, India. It is one of the tallest brick towers in the world. The Qutub Minar was built by Qutb-ud-din Aibak, the founder of the Delhi Sultanate, in the 13th century.