Answer:
d) Vaishyas.
Step-by-step explanation:
Nectar In a Sieve is a book by Kamala Markandaya that deals with the numerous ills of rural Indian society. It tells the story of Rukmani and her husband Nathan and their family, living a life of farming amidst poverty and famine.
In the very beginning, before Rukmani got married, she was from the Kshatriya caste for her father was a landowner/ chief of the village. But after she married Nathan who belongs to the farming community, she got 'demoted' to the Vaishyas caste. This caste includes the farming and merchant community, and is a class lower than the Kshatriyas.