Agra Fort is one of the popular Mughal monuments built in the 16th century by _________.

Akbar

The correct answer is Option 2- Akbar

- Agra Fort, one of the popular Mughal monuments, was built in the 16th century by Emperor Akbar, the third Mughal emperor of India.

- The construction of the fort began in 1565 during his reign and continued under the rule of his successors, Jehangir and Shah Jahan, who made further additions and modifications to the fort's structure.

- The Agra Fort is a UNESCO World Heritage Site and is located in the city of Agra, Uttar Pradesh, India.