Correct option is C
Copper was used to make weapons and tools in Harappan cities.
· Gold and silver were more commonly used for decorative purposes rather than for making tools or weapons.
· Harappan civilization existed during the Bronze age. Hence copper, bronze, gold, silver, lead-related objects can be seen. The Harappan people were aware of almost all the metals except iron.
· The most famous specimen in this regard is the bronze ‘dancing girl’ figurine discovered at Mohenjodaro.