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Question

What is the primary reason for the rapid population growth in developing countries during the second stage of the Demographic Transition Model?

This question was previously asked in
RRB NTPC 2025 Under Graduate CBT 1 Question Paper PDF (20-Jun-2026) (Shift 3)
The correct answer is

High birth rates and declining death rates

The Demographic Transition Model describes how a country's birth and death rates change as it develops economically.

In Stage 1, both birth and death rates are high, so population remains fairly stable.

In Stage 2, improvements in medicine, sanitation, food supply and healthcare cause death rates to fall sharply, while birth rates remain high.

This widening gap between high births and declining deaths leads to rapid population growth, which is typical of many developing countries.

Hence, the primary reason is high birth rates combined with declining death rates.

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