Who constructed Humayun's tomb in Delhi?

Answer: Option C

The tomb of Humayun was built by the orders of Humayun's first wife and chief consort, Empress Bega Begum (also known as Haji Begum). The construction began in 1565, nine years after his death, and completed in 1572 AD at a cost of 1.5 million ruppees at the time.