The correct option is Lothal.
Explanation
The Indus Valley Civilization (IVC) demonstrated significant advancement in metallurgy, particularly in the casting of copper and bronze. Specific artifacts discovered at different sites serve as key identifiers for the cultural and economic activities of those regions.
Site-wise Analysis:
- Lothal: Located in Gujarat, this site is primarily known for its artificial dockyard, indicating maritime trade. It is the specific site where the copper dog artifact was discovered. Other notable finds at Lothal include a bead-making factory, fire altars, and a terracotta model of a ship.
- Harappa: This site is famous for the two rows of six granaries, the stone symbol of lingam and yoni, and the red sandstone torso of a male figure. It is not the primary site for the copper dog.
- Mohenjodaro: Renowned for the Great Bath, the Great Granary, and the bronze Dancing Girl. It also yielded the steatite image of the Bearded Priest and the Pashupati seal.
- Kalibangan: Located in Rajasthan, this site is distinguished by the evidence of a ploughed field, fire altars, and camel bones.
Key Takeaway:
The copper dog is a distinctive metal artifact specifically excavated from the port city of Lothal, distinguishing it from the bronze Dancing Girl found at Mohenjodaro.