Which of the following options correctly defines natality?

The number of births during a given period in the population

The correct answer is Option (2) - The number of births during a given period in the population

Natality refers to the number of births during a given period in the population that are added to the initial density. It is a measure of the rate at which new individuals are added to the population. The concept of natality is important in understanding population dynamics and growth.

The number of births in a population contributes to an increase in population density over time. By measuring and monitoring the natality rate, we can gain insights into the reproductive patterns and potential for population growth. Factors such as fertility rates, reproductive behavior, and environmental conditions can influence the natality rate of a population.

Mortality is the number of deaths in the population during a given period. 

Immigration is the number of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration. 

Emigration is the number of individuals of the population who left the habitat and gone elsewhere during the time period under consideration.