The correct option is A High birth rate
Growth of population refers to the change in
the number of inhabitants of a country/territory
during a specific period of time. Annual Growth Rate of Population refers
to the rate at which the number of individuals in a given
popular increase over a year, expressed as a fraction of the initial
popular of the previous years.There are three main processes of change of population : birth rates, death rates and migration. The natural increase of population is the difference between birth rates and death rates.