Concept:
The Chalcolithic Age represents the Copper-Stone Age during which humans used:
• copper tools,
• stone implements,
• pottery,
• and early agricultural practices.
Several Chalcolithic cultures flourished in Rajasthan.
Step 1: Examining Ahar.
\[
\text{Ahar}
\]
Ahar is a famous Chalcolithic site located in Rajasthan and associated with the Ahar-Banas culture.
Thus:
\[
A \text{ is correct.}
\]
Step 2: Examining Balathal.
\[
\text{Balathal}
\]
Balathal is another important Chalcolithic site situated in Rajasthan.
Thus:
\[
B \text{ is correct.}
\]
Step 3: Examining Ojiyana.
\[
\text{Ojiyana}
\]
Ojiyana is also located in Rajasthan and belongs to Chalcolithic cultural traditions.
Thus:
\[
C \text{ is correct.}
\]
Step 4: Examining Daimabad.
\[
\text{Daimabad}
\]
Daimabad is located in Maharashtra, not Rajasthan.
Thus:
\[
D \text{ is incorrect.}
\]
Step 5: Writing the correct combination.
Correct statements are:
\[
A, B \text{ and } C
\]
Hence:
\[
\boxed{(1)\ A, B \text{ and } C \text{ Only}}
\]
Step 6: Importance of Chalcolithic cultures.
Chalcolithic cultures are important because they reveal:
• transition from stone to metal use,
• village settlements,
• agricultural economy,
• and early craft specialization.