Explanation: To understand the context of the question, it is essential to delve into the history of Delhi and the contributions of Emperor Shah Jahan to the city's architectural landscape. Shah Jahan, the fifth Mughal emperor, reigned from 1628 to 1658 and is renowned for his architectural patronage, which includes the construction of the Taj Mahal in Agra.
In Delhi, Shah Jahan's most notable contribution is the Jama Masjid, which is one of the largest mosques in India. The construction of the mosque began in 1650 and was completed in 1656. The mosque is located in Old Delhi and is a significant example of Mughal architecture, characterized by its grandeur, intricate carvings, and the use of red sandstone and white marble.
The Jama Masjid is not only a place of worship but also a historical landmark that reflects the architectural prowess of the Mughal era. It is situated on a high platform and is accessible through three gateways and two flights of steps. The mosque can accommodate up to 25,000 worshippers and is known for its large courtyard, which is one of the largest in the world.
In contrast, the other options listed do not align with the historical facts. Nizamuddin Dargah, a Sufi shrine, is associated with the 14th-century Sufi saint Nizamuddin Auliya and was not constructed by Shah Jahan. Fatehpur Sikri, a historical city near Agra, was built by Emperor Akbar and served as the capital of the Mughal Empire for a brief period. Akbar's Tomb, located in Sikandra, was built by his son, Emperor Jahangir, and is dedicated to Emperor Akbar.
Therefore, the correct answer is (B) Jama Masjid, as it is the only monument among the options that was built by Emperor Shah Jahan and is located in Delhi. This question tests the knowledge of historical monuments in Delhi and the contributions of Mughal emperors to the city's architectural heritage.