Here’s the correct matching of stages with their uses:
1. One thread corresponds to Chikki, which is a type of Indian sweet made with sugar and nuts.
2. Soft ball corresponds to Gujiyas, a deep-fried pastry filled with sweetened khoya or coconut.
3. Firm ball corresponds to Sohan papdi, a traditional Indian sweet made of flour, sugar, and ghee.
4. Hard ball corresponds to Gajak, a crunchy, sweet snack made with sesame seeds and jaggery.
Thus, the correct matching is (C).