Answer : 4. "चन्हुदड़ो"
Explanation :

Expl:– Chanhudaro was the only city of Indus without fortification. It was situated on the left bank of Indus river. The large quantity of cosmetics was found here. This was an industrial city. An impressive worshop recognised as Bead making factory, was found at chanhudaro which included a furnace.