Step 1: Understanding Harappan weights.
The people of the Harappan civilization were known for their advanced trade system and had developed a standardized system of weights and measures. These weights were made from different materials, including stones.
Step 2: Chert Stone.
Chert stone was commonly used to make the weights in Harappan civilization. Chert is a hard, fine-grained rock that was readily available and durable, making it ideal for use in the production of weights.
Step 3: Other options.
• (A) Marbal: Marble was not typically used for making weights in the Harappan civilization.
• (B) Black Stone: While black stones were used in some artifacts, chert stone was more commonly used for making weights.
• (D) Alabaster Stone: Alabaster is a softer material and was not used for weights.
Step 4: Conclusion.
Thus, the correct answer is (C) Chert Stone, which was used by the Harappans to make weights.
Final Answer: Chert Stone.