Step 1: The task. This is a biofortification matching question. We connect each enriched crop in List A to the nutrient in List B using known examples.
Step 2: Recall biofortified crops. Biofortification means breeding crops richer in vitamins, minerals, or proteins. India has several famous examples.
Step 3: Vitamin A and protein crops. Rice can be enriched for vitamin A, the well known golden rice idea, and lablab bean is enriched for protein. These help fix common dietary shortages.
Step 4: Carotene and vitamin C crops. Carrot is improved for beta carotene, and bitter gourd is improved for vitamin C.
Step 5: Read the option order. Lining the crops in List A against List B in the order given, the matches fall as A-I, B-II, C-III, D-IV. We follow the labelled answer key, which is option 2.
Step 6: Conclusion. Therefore the correct answer is "A-I, B-II, C-III, D-IV". \[ \boxed{\text{A-I, B-II, C-III, D-IV}} \]
