Option d is the correct answer. The Red Fort in Delhi was built by Shah Jahan in the 17th century. It is a UNESCO World Heritage Site and it is one of the most iconic buildings in India. Shah Jahan built the Red Fort as his new capital after he shifted the capital of the Mughal Empire from Agra to Delhi in 1638. The Red Fort is a complex of buildings that includes a palace, a mosque, and several other structures. It is made of red sandstone and is surrounded by a high wall. Important Tips Red Fort Important Architecture: Diwan-I-Khas- The Diwan-i-Khas, or the Hall of Private Audiences, was like a special room in the Red Fort of Delhi that was made in 1648. It was used for gatherings and meetings. The Mughal Emperor Shah Jahan would meet important people there, like his advisors and guests from other places. People also called it the Shah Mahal. Moti Masjid- The Moti Masjid, which means 'Pearl Mosque', is a mosque made of white marble. It's found in the Red Fort in Delhi, India. It was built by the Mughal emperor Aurangzeb between 1659 and 1660. The mosque is close to the Hammam and the Diwan-i-Khas. Shalimar Bagh- Shalimar Bagh is a beautiful garden made by the Mughal emperors in Srinagar, Jammu and Kashmir, India. It's connected to Dal Lake by a channel on the northeast side. People also call it Shalimar Gardens, Farah Baksh, and Faiz Baksh. Another famous garden near the shore is Nishat Bagh, known as 'The Garden of Delight'. Mughal Emperor Jahangir built Shalimar Bagh in 1619. This garden is the best example of Mughal gardening. Nowadays, it's like a park where everyone can go, and some even call it the "Crown of Srinagar".