Look at the map how did the location of the ancient cities of harappa and mohenjo daro contribute to their development

Being located in the very middle of Indus River and the Ghaggar-Hakra River, this city had a perfect location in between two major river routes. The city was one of the largest urban centers of the Harappan civilization. Its location allowed it control over the commerce that inevitably used these rivers to transport goods in the region. Also, it provided the city with a source of fresh water and since back then the ridge where the city was located was elevated over the river to avoid its flooding, the location was both located at an important crossroads of river navigation but also protected from natural elements. Thus, it was a hub of commerce, art and a complex social organization.

In simple forms the answer is D