The correct answer is: C) Chandravalli
Chandragalli is a prehistoric site in Karnataka famous for its neolithic ash mounds. It is located in the Bellary district of Karnataka, India. The site was first excavated in the early 20th century by H. de Terra and T. T. Paterson. They found that the site was occupied from the Neolithic period to the Iron Age. The most important finds from the site are the neolithic ash mounds. These mounds are made up of ash, charcoal, and pottery. The pottery found at the site is of a type that is found in other neolithic sites in India. The ash mounds are thought to be the remains of houses that were built by the people who lived at the site.
The other options are incorrect because:
- Sanganakallu is a prehistoric site in Karnataka that is famous for its megalithic monuments.
- Aihole is a medieval Hindu temple complex in Karnataka.
- Maski is a prehistoric site in Karnataka that is famous for its Indus Valley Civilization artifacts.