The correct answer is (c), Dharwar System.
The Dharwar System is a Precambrian geological system that is found in the Indian subcontinent. It is composed of a variety of igneous and metamorphic rocks, and it is known for its rich deposits of iron ore. The Dharwar System is thought to have formed between 2.5 and 3.5 billion years ago, and it is one of the oldest geological systems in India.
The other options are incorrect because they do not contain major deposits of iron ore. The Gondwana System is a sedimentary system that is found in the southern part of the Indian subcontinent. It is composed of sandstone, shale, and limestone, and it is not known for its iron ore deposits. The Cuddapah System is a sedimentary system that is found in the central part of the Indian subcontinent. It is composed of sandstone, shale, and limestone, and it is not known for its iron ore deposits. The Vindhyan System is a sedimentary system that is found in the northern part of the Indian subcontinent. It is composed of sandstone, shale, and limestone, and it is not known for its iron ore deposits.