An important industrial center in Karnataka known for steel production:

Mysuru
Hubballi
Ballari
Mangaluru

The correct answer is C) Ballari.

Ballari is a city in the Indian state of Karnataka. It is the headquarters of Ballari district and is located in the Bellary-Hospet revenue division. The city is known for its iron ore reserves and is one of the major industrial centers in Karnataka. Ballari is also home to a number of educational institutions, including the University of Bellary.

Mysuru is a city in the Indian state of Karnataka. It is the third-largest city in the state after Bangalore and Hubli-Dharwad. Mysuru is known for its palaces, temples, and gardens. The city is also home to a number of educational institutions, including the University of Mysore.

Hubballi is a city in the Indian state of Karnataka. It is the second-largest city in the state after Bangalore. Hubballi is known for its industries, including textiles, engineering, and pharmaceuticals. The city is also home to a number of educational institutions, including the University of North Karnataka.

Mangaluru is a city in the Indian state of Karnataka. It is the fourth-largest city in the state after Bangalore, Hubli-Dharwad, and Mysuru. Mangaluru is known for its beaches, temples, and churches. The city is also home to a number of educational institutions, including the Mangalore University.