The question pertains to major oil discoveries in India. The country has several regions where oil exploration takes place, yet only a few have led to substantial findings. The options include:
- Krishna Godavari Basin
- Cauvery Basin
- Rajasthan Desert
- Lower Assam Valley
Among these, the Krishna Godavari Basin is prominently known for its significant oil and natural gas reserves. Located along the east coast of India, it has been the site of major hydrocarbon discoveries, making it one of the most important basins in India for oil and gas exploration and production. The presence of extensive reserves in this basin has made it a focal point for ongoing exploration and extraction activities.
Hence, the correct answer is:
Krishna Godavari Basin