Step 1: Concept
Biofortification of crops.
Step 2: Meaning
Matching specific crops enriched with certain nutrients.
Step 3: Analysis
Vitamin A enriched plant is Rice (IV). Protein enriched plant is Lablab (I). $\beta$-carotene enriched plant is Carrot (III). Vitamin C enriched plant is Bitter gourd (II).
Step 4: Conclusion
The correct matching is A-IV, B-I, C-III, D-II.
Final Answer: (2)