Option 1 states that China and Russia are also one of the largest producers of manganese ore in the world. This is incorrect. China is indeed a major producer of manganese ore, but Russia is not. The correct answer does not include China.

Option 2 correctly states that Brazil and Russia are both one of the largest producers of manganese ore in the world, alongside India. This is the correct answer.

Option 3 states that Australia and U.S.A. are also one of the largest producers of manganese ore in the world. This is incorrect. Although Australia is a significant producer, the U.S.A. is not a major producer of manganese ore.

Option 4 states that South Africa and U.S.A. are also one of the largest producers of manganese ore in the world. This is incorrect. South Africa is indeed a significant producer, but the U.S.A. is not a major producer of manganese ore.

Therefore, the correct answer is option 2.