The correct options are
C Women were involved in primary production.
D Women protected Thinai fields from birds.
Sangam literature features women from Panar families, dancers and even royal women. Women belonging to the five different Thinai are referred to in the Sangam literature. Vennikkuyathiyar, hailing from the village of Venni was an important poetess of the time. Instances of women protecting Thinai fields from birds and Umanar kula women selling salt prove their involvement in production.