PRELIMS 2021 KEYS RAJA sir cracking IAS Academy

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Preliminary Exam CSAT July 20

1. In a study, scientists compared the microbiomes of poorly nourished and well nourished infants and young children. Gut microbes were isolated from faecal samples of malnourished and healthy children. The microbiome was "immature" and less diverse in malnourished children compared to the better developed "mature" microbiome found in healthy children of the same age. According to some studies, the chemical composition of mother's milk has shown the presence of a modified sugar (sialylated oligosaccharides). This is not utilized by the baby for its own nutrition. However, the bacteria constituting the infant's microbiome thrive on this sugar which serves as their food. Malnourished mothers have low levels of this sugar in their milk. Consequently, the microbiomes of their infants fail to mature. That in turn, leads to malnourished babies.

Which one of the following is the most logical, rational and crucial inference that can be derived from the above passage ?

General Studies

Political Science and International Relations

Sociology

Some Reference Essays

List of previous year essay topics (1997-2019)

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