Final answer:
Rukmani's family cultivates a rice paddy and a vegetable garden, as indicated by the line about winter vegetables being already green after the rice is done.
Step-by-step explanation:
Rukmani's family has two areas that provide crops: a rice paddy, and what else? The answer is (d) A vegetable garden. This can be inferred from the passage that mentions, "When the latest-ripening rice is done, The winter vegetables are already green." It indicates that alongside rice, the family is engaged in growing vegetables. Plantation agriculture, historically, has focused on crops like cotton, sugar cane, tea, and tobacco among others. However, for Rukmani's family, the presence of both rice paddies and a vegetable garden suggests a combination of staple crops and possibly some additional crops for food diversity or income.