The Great Bath: ● It is a very special tank built-in Mohenjo-daro . So, option 2 is correct. ● It was lined with bricks, coated with plaster, and made water-tight with a layer of natural tar. ● There were steps leading down to it from two sides, while there were rooms on all sides. ● Water was probably brought in from a well and drained out after use. ● Perhaps, important people took a dip in this tank on special occasions.