Step 1: Understanding the Concept:
Agricultural crop geography in India is shaped by regional soil characteristics, climatic zones, and irrigation infrastructure.
Step 2: Detailed Explanation:
1. Chickpea (A) is a major rabi pulse.
Madhya Pradesh is the largest producer of chickpea in India (II).
2. Cotton (B) grows well in black cotton soil (regur).
Maharashtra is a major producer of cotton in the country (III).
3. Mustard (C) is a oilseed crop adapted to dry and cool climates.
Rajasthan leads the country in Rapeseed and Mustard production (IV).
4. Pigeon Pea (D) is widely cultivated across central and southern India, with Karnataka being a major producer (I).
Matching the pairs: (A) - (II), (B) - (III), (C) - (IV), (D) - (I).
Step 3: Final Answer:
The correct matching sequence corresponds to Option 2.