The leading sugarcane producer district of Bihar is –

Explanation

At the time of the question as well as at present, option (a) is the correct answer. According to the Bihar Economic Survey, 2024–25, in the year 2023–24 the highest sugarcane production was in West Champaran (9,667,743 metric tonnes). Thereafter, East Champaran (1,325,554 metric tonnes), Gopalganj (697,653 metric tonnes), and Sitamarhi (637,287 metric tonnes) were next.