The Ravva offshore block, with great potential for oil, is located in:

Correct Option

The Ravva offshore block is located within the Krishna-Godavari (KG) basin, situated off the coast of Andhra Pradesh. This basin is a significant hydrocarbon-producing region in India, known for its considerable reserves of crude oil and natural gas. The Ravva field contributes notably to the nation's energy production.

Incorrect Options

The Cauvery basin, Mahanadi basin, and Palar–Pennar basin are distinct sedimentary basins with varying hydrocarbon potential along the Indian coast. However, the Ravva offshore block is not situated in any of these basins.