Which Mughal emperor built the city called Maksudabad, later popularly known as Murshidabad?

The correct answer is D, Akbar. The town on the Bhagirathi that later became Murshidabad was founded as Maksudabad in the reign of Akbar, and it kept that name until the Bengal governor Murshid Quli Khan shifted his seat there in the early eighteenth century and renamed it after himself. Murshidabad then served as the capital of Bengal under the Nawabs until the British moved power to Calcutta after Plassey. Option A is wrong because Bahadur Shah Zafar, the last emperor, ruled only at Delhi in the nineteenth century and founded no city. Option B is wrong because Shah Jahan built Shahjahanabad at Delhi, not Maksudabad. Option C is wrong because Humayun spent much of his reign fighting Sher Shah Suri and in exile in Persia, and the city is not credited to him. Remember the pair Maksudabad and Murshidabad together with Akbar.