Step 1: Understanding the Question:
This question tests knowledge of cropping systems in dryland farming.
Step 2: Detailed Explanation:
Under dryland farming (rainfed conditions), single cropping is the most prominent practice.
Farmers grow only one crop per year due to limited rainfall.
Double cropping (B): Requires assured irrigation.
Relay cropping (C): Sowing the next crop before the previous is harvested.
Multiple cropping (D): Growing more than two crops per year.
Thus, single cropping is most common in dryland farming.
Step 3: Final Answer:
Thus, single cropping is most prominent under dryland farming, which corresponds to option (A).
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