Detailed Explanation:

Correct Answer: ✅ Option 3 (All the three)

All three pairs are correctly matched. These countries are globally known for their abundant reserves and production of strategically important minerals that are essential for modern industries, renewable energy technologies, and manufacturing.

✅ Pair I is Correct: Botswana is one of the world's leading diamond-producing countries, and diamonds are the backbone of its economy.

✅ Pair II is Correct: Chile possesses vast lithium reserves, especially in the Atacama Desert, making it a major global lithium supplier.

✅ Pair III is Correct: Indonesia is the world's largest producer of nickel, a critical mineral for batteries and stainless steel production.

Short Notes: Critical Minerals of the World

• Diamonds are important for both jewelry and industrial applications.

• Botswana is among the world's top diamond exporters.

• Lithium is a key component in electric vehicle (EV) batteries.

• Chile, Australia, and Argentina form the famous "Lithium Triangle" region (Chile and Argentina directly; Bolivia is also a major reserve holder).

• Nickel is essential for battery manufacturing and stainless steel production.

• Indonesia holds some of the world's largest nickel reserves.

• Demand for lithium and nickel is increasing due to the global transition to clean energy.