Zero population growth can be reached by the humans when the birthrate equals the death rate.
Answer: Option A
Step-by-step explanation:
Zero population growth is defined as the condition where there is no change in the population of the people within the provided time. For the population to remain neutral ( i.e neither increase nor decrease) the number of humans born per year must be equal and compensated by the number of humans died of the same year.
For example, If the birth rate of a country is 33 then the death rate must also be 33. Thus for maintaining zero population growth, the number of birthrate must equal the death rate.