I believe the answer is "country". There is no need for it to be capitalized, as it's not a proper noun. Hope I helped!
Its being explained in the sentence
It should as it gives energy and keeps the kids awake and ready to learn in school
That, which was at the core of Nathan and Rukmani’s marriage is: D. Suffering.
Suffering was a central theme in the union between Nathan and Rukmani. In the story, we learn that the union was sealed when Rukmani was only twelve years old.
She bore a girl child to Nathan within a year of their marriage. After that, she found it difficult to conceive for several years.
Later, she visited Kenny a fertility doctor who worked on her and helped her to conceive five sons for Nathan.
What followed was intense suffering for this family. Hunger and poverty ravished them. The same line of events occurred in the life of their first daughter, Ira.
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