Correct Answer:

C) A - II, B - IV, C - I, D - III

Explanation:

India has several important mining and refining centers that are associated with specific minerals and locations. Let's match them correctly:

1. Iron Ore Mine - Durg (II)

   • Durg, located in Chhattisgarh, is a well-known iron ore mining region.
   • It is part of the larger Bastar-Durg iron belt, which supplies iron ore for steel production.

2. Copper Mine - Khetri (IV)

   • Khetri, in Rajasthan, is famous for its copper mines.
   • It is one of the most important copper-producing regions in India, operated by Hindustan Copper Limited (HCL).

3. Oil Refinery - Digboi (I)

   • Digboi, in Assam, is India's first oil refinery, established in 1901.
   • It continues to be a significant oil refining center.

4. Bauxite Mine - Makaila Hill (III)

   • Makaila Hill, located in Jharkhand, is rich in bauxite reserves.
   • Bauxite is the primary ore for aluminum production, and this region contributes significantly to India's aluminum industry.

Thus, the correct matching is:
? Iron Ore Mine - Durg (II)
? Copper Mine - Khetri (IV)
? Oil Refinery - Digboi (I)
? Bauxite Mine - Makaila Hill (III)

Hence, option C (A - II, B - IV, C - I, D - III) is the correct answer.