Explanation:

The Chola period saw the culmination of Dravida temple art resulting in the most sophisticated buildings of medieval India. The Tamil Nadu temples were fully evolved in their style and design by the 8th century.
The dvarapalas, or guardian figures, at the entrance to the mandapa, which started from the Palava period became a unique feature of the Chola Temples. The Dravidian Style got fully developed after a transition from the rock cut structures of the Pallava Period. Early Chola temples at the Bank of river Kaveri were smaller and brick made, in comparison to the colossus buildings of the Imperial Cholas. The temples of the Imperial Cholas are covered with exquisite well composed sculptures and frescoes. Largest and tallest of all Indian temples i.e. Siva Temple of Thanjore was built in Chola Period. Ganas, among the sculptures at the temple, are the most memorable figures made in Chola temples