Read the passage and answer the question :

"Perhaps the most unique features of the Harappan civilisation was the development of urban centres. They had citadel and the lower towns. One of the most distinctive features of Harapppan cities was the carefully planned drainage system. The roads intersected at right angles and were well planned."

At which of the following site, the entire settlement was fortified, with town sections separated by walls?

Dholavira

The correct answer is Option (4) → Dholavira

While most Harappan settlements have a small high western part and a larger lower eastern section, there are variations. At sites such as Dholavira and Lothal (Gujarat), the entire settlement was fortified, and sections within the town were also separated by walls. The Citadel within Lothal was not walled off, but was built at a height.