Isolating the odd one out:
Among the four states listed, three, Madhya Pradesh, Rajasthan, and Maharashtra, have historically dominated India's gram (chickpea) acreage and output, together accounting for the large majority of national production in 2021-22 according to agricultural production statistics. Gujarat, while a significant agricultural state overall, grows comparatively little gram relative to these three, its cropping pattern leans toward groundnut, cotton, and other cash crops rather than gram. Since Gujarat is the outlier not among the top three gram producers, any answer option must include Maharashtra, Madhya Pradesh, and Rajasthan while excluding Gujarat, which is exactly what is listed in option (1).