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

The Ravva offshore block is located in the Krishna–Godavari (KG) basin off the coast of Andhra Pradesh. Official materials and educational references identify the Ravva oilfield as one of the important oilfields on the east coast, explicitly placing it in the Krishna‑Godavari basin [1]. Textbook material also refers to an oil field in the Godavari‑Krishna offshore area (noted as “Rawa” in the snippet), indicating hydrocarbon production potential in that combined Godavari–Krishna offshore region, which aligns with the Ravva field’s KG location [2]. Therefore the correct choice is option 1 (Krishna‑Godavari basin).

Sources

1. [1] https://egyankosh.ac.in/bitstream/123456789/58891/1/EXPERIMENT%2011.pdf
2. [2] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 8: Energy Resources > 4. The Eastern Coast Oil-fields > p. 13