Which state is the largest producer of petroleum in India?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the largest producer of petroleum in India. This means we need to identify which state in India produces the most petroleum.

2. **Identifying Key States**: From the information provided, we know that Maharashtra, Rajasthan, and Assam are significant states in terms of petroleum production.

3. **Focusing on Maharashtra**: Among these states, Maharashtra is highlighted as the largest producer. The mention of "Bombay High" indicates a major oil field in Maharashtra known for its significant petroleum extraction.

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