Which of the following crops requires a hot and humid climate in the Indian…

Concept: Crops grown in India are classified into distinct agro-climatic groups based on the season they are sown in and the temperature, humidity, and rainfall they need. A crop that needs warmth through its whole growing cycle plus high moisture (either rainfall or irrigation) is a hot-and-humid (tropical, largely kharif-season) crop; a crop that grows best in cool, comparatively dry conditions is a rabi-season crop.

Application: The stem asks for the crop that needs a hot AND humid climate averaging 21°C to 27°C. Checking each offered crop against its known agro-climatic requirement:

• Sugarcane is a tropical crop that needs continuous warmth and high moisture through its long growth period, with an average temperature of about 21°C-27°C and heavy rainfall or irrigation (roughly 75-100 cm) — a hot-and-humid requirement that matches the stem exactly.

• Wheat is a rabi crop that germinates and tillers in a cool climate and only needs a brief warm, dry spell at ripening — its growing-season requirement is cool, not hot-and-humid.

• Gram (chickpea) is a rabi pulse that needs a cool and comparatively dry climate through its growth period, with low total rainfall — the opposite of a humid requirement.

• Mustard is a rabi oilseed that also needs a cool, dry climate, especially during its early vegetative stage — again the opposite of hot-and-humid.

Cross-check: All three other options belong to the rabi (winter) cropping season, which by definition needs cool and comparatively dry conditions, while sugarcane is grown across an extended, largely kharif/tropical cycle needing sustained heat and moisture — confirming that only the crop needing a hot-and-humid climate at 21°C-27°C is the one matching the stem's condition.