Step 1: Understanding the Concept:
This question tests knowledge of botanical names of important crops.
Step 2: Detailed Explanation:
Chickpea (A):
Scientific name: Cicer arietinum (IV).
Thus, A matches with IV.
Sunflower (B):
Scientific name: Helianthus annuus (III).
Thus, B matches with III.
Pearl millet (C):
Scientific name: Pennicium glaucum (I).
Thus, C matches with I.
Soybean (D):
Scientific name: Glycine max (II).
Thus, D matches with II.
Step 3: Final Answer:
Thus, the correct matching is A-IV, B-III, C-I, D-II.
[0.5cm]