The correct option is (C) I-c, II-a, III-b, IV-d
Wheat → Food Crop; Ragi → Millet Crop; Tea → Beverage Crop; Maize → Food & Fodder Crop.
From the source: Wheat is described as a food crop; Ragi is categorised under Millets; Tea is explicitly called "an important beverage crop"; Maize "is used both as food and fodder." Match each crop to its correct type — eliminate options that misplace even one pair.