Late cauliflower does not set seed in plains due to absence of

Answer: Option D

Late cauliflower does not set seed in plains due to the absence of Short days and low temperature.
Cauliflower (Brassica oleracea) is one of the most important vegetable crops in India. The edible part of cauliflower is known as curd, which consists of a shoot system with short internodes, branch apices and bracts.
The plain region has afternoons that are too hot for cauliflower growing, we may try planting in partial shade. However, growth slows without sunlight and might find that plants are still putting on leaves when they should be forming heads.