The correct answer is: c) Muzaffarpur
Muzaffarpur is a city in the Indian state of Bihar. It is the headquarters of Muzaffarpur district and the largest city in the Mithila region. The city is known for its mango production, and is often referred to as the “Mango City of India”.
Darbhanga is another city in Bihar that is known for its mango production. However, Muzaffarpur is the largest producer of mangoes in the state. In 2019, Muzaffarpur produced over 1.5 million tonnes of mangoes, while Darbhanga produced only about 0.5 million tonnes.
Patna is the capital of Bihar and the second largest city in the state. It is not known for its mango production.
Gaya is a city in Bihar that is known for its religious importance. It is one of the oldest cities in India and is home to many temples and shrines. It is not known for its mango production.