The correct answer is: b) Jamnagar.
The Jamnagar Refinery is the world’s largest single-location petroleum refinery complex. It is located in Jamnagar, Gujarat, India. The refinery is owned and operated by Reliance Industries Limited (RIL). It has a capacity of 1.24 million barrels per day (200,000 m3/d). The refinery was commissioned in 1965. It has been expanded several times since then. The refinery is a major source of employment in Jamnagar. It also contributes significantly to the economy of Gujarat.
The other options are incorrect:
- Vadodara is a city in Gujarat, India. It is the third largest city in the state after Ahmedabad and Surat. Vadodara is home to a number of industries, including the automobile industry, the chemical industry, and the textile industry.
- Surat is a city in Gujarat, India. It is the second largest city in the state after Ahmedabad. Surat is known for its diamond industry. It is also a major textile center.
- Ankleshwar is a town in Gujarat, India. It is located in the Kutch district. Ankleshwar is known for its oil and gas fields. It is also a major industrial center.