| Assertion (A): The world population experienced an unprecedented growth during the second half of the 20th century. |
| Reason (R): Death rate fell considerably during that period due to development of health services. |
A) Both A and R are true and R is the correct explanation of A.
B) Both A and R are true but R is not the correct explanation of a.
C) A is true but R is false.
D) A is false but R is true.
Correct Answer: A
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