The Shastras contained works of science and philosophy
All of these
The Bhagvad Gita a later addition to the Mahabharata enshrines a philosophical doctrine and in it are described the three paths to salvation: karma, gyan and bhakti
The Puranas is important as they were the main influence in the development from early Vedic religion to Hinduism
First statement is incorrect because though the traces of Pallava and Chalukya temple architecture are available, but its construction is generally attributed to the 8th century Rashtrakuta dynasty. The second statement is also incorrect because the temple is a complete dravida building
Viharas were for the purpose of living, Chaityas were assemblies for the purpose of discussions. Further, Chaityas were with Stupas, Viharas did not have stupas.
The Kadambas had their capital at Vaijayanti or Banavasi in north Kanara district in the state of Karnataka. The Kadambas were contemporaries of the Pallavas. They claimed to be Brahmanas. The Kadamba dynasty was founded by Mayurasharman.