Correct Option: D

Well distributed rainfall ranging around 2000 mm to 5000 mm is considered suitable for successful tea plantation. The monthly average maximum temperature ranging between 28°C and 32°C during April to September, with occasional rise upto 36° - 37° C is good for the plantation. Tea is planted in flat and slightly undulating land at elevation ranging from 20 to 250 m above sea level in major part of the plains of NE India. On hill slopes of Darjeeling and South India, it is planted upto a height of 2000 m above sea level. The state of Assam is the world’s largest tea growing region. It experiences high precipitation; during the monsoon period, as much as 10 to 12 inches (250–300 mm) of rain per day.