A) vital index
B) population density
C) total count of individuals
D) fertility rate
Correct Answer: A
Solution :
The percentage ratio of natality over mortality is known as vital index, ie, Vital index refers to a birth-death ratio \[\left[ \text{100 }\!\!\times\!\!\text{ }\frac{\text{Birth}}{\text{Death}} \right]\] It determines the growth of a population.
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