Concept:Monocot crops typically have fibrous roots, while dicots usually have taproots.Explanation:Sugarcane is a monocot plant, so it develops a fibrous root system that spreads from the base of the stem.Cotton, coffee, and cowpea are dicot crops, and they produce taproot systems instead.Thus, among the given crops, the one with a fibrous root system is sugarcane.Answer:D. sugarcane