Bauxite, the primary ore of aluminum, is found in significant quantities in which Karnataka district?

The correct answer is C) Raichur.

Bauxite is a type of rock that is the primary ore of aluminum. It is found in significant quantities in the Raichur district of Karnataka. The Raichur district is located in the northern part of Karnataka, and it is one of the most important mining districts in the state. The district is home to a number of bauxite mines, and it is a major producer of aluminum.

The other options are incorrect. Belgaum is a district in the northern part of Karnataka. It is not a major producer of bauxite. Chikmagalur is a district in the central part of Karnataka. It is not a major producer of bauxite. Kodagu is a district in the southern part of Karnataka. It is not a major producer of bauxite.