What is the percentage of natural growth rate if the birth rate is 100, death rate is 10, and the population size is 1000?

9.0%

The correct answer is Option (2) -9.0%

The percentage of natural growth rate can be calculated by subtracting the death rate from the birth rate and then dividing the result by the total population, and finally multiplying by 100 to obtain the percentage.

Given: Birth rate = 100 Death rate = 10 Population = 1000

Natural growth rate = (Birth rate - Death rate) / Population * 100 = (100 - 10) / 1000 * 100 = 90 / 1000 * 100 = 9%

Therefore, the percentage of natural growth rate is 9%. The correct option is (b) 9.0%.