High temperature and dry conditions cause maximum plant wilting

Steps:

• Identify key wilting factors: high temperature increases transpiration, dry or low-humidity conditions limit water uptake.
• Parse table rows assuming format (temp/metric, condition, time, humidity/other): A (15°C, dry, 00:00, 32% humidity), B (14:00 time, 24°C temp, implied dry/hot), C (6°C, fog/rain, 08:00, 3%? low metric), D (5°C, dry, 22:00, 16% humidity).
• Compare: Wilting peaks with hottest temp and dry exposure; B has peak 24°C at midday.
• Select row with combined highest heat stress.

Why B is correct:

• At 24°C during 14:00 (afternoon peak solar exposure), transpiration rate surges per the formula for evaporation (proportional to temperature and vapor pressure deficit), causing rapid water loss and wilting in dry fields.

Why the others are wrong:

• A: Cool 15°C at midnight reduces transpiration, minimizing wilting despite dry air.
• C: Low 6°C with fog/rain provides moisture, preventing water stress.
• D: Mild 5°C at evening limits evaporation, avoiding significant wilting.

Final answer: B