The correct option is C Kalibangan
Kalibangan, which is located in the present-day Hanumangarh district of Rajasthan is a part of Indus Valley Civilization. It saw two cultural phases - pre-Harappan (from 3500BC to 2500 BC) and Harappan (from 2500BC to 1500BC). The pre-Harappan community was a fortified parallelogram. The fortification wall which was constructed surrounding the community used the mud-bricks. Apart from that, mud bricks were used for the construction of houses within the walled area.