The population growth or population change refers to the change in number of inhabitants of a territory during a specific period of time. This change may be positive as well as negative. It can be expressed either in terms of absolute numbers or in terms of percentage. Population change in an area is an important indicator of economic development, social upliftment and historical and cultural background of the region.

Which of the following statement is correct?

Crude Death Rate (CDR) is a simple method of measuring mortality of any area.

The correct answer is Option 3: Crude Death Rate (CDR) is a simple method of measuring mortality of any area. 

Option 1: “There are two components of population change – births and deaths.” This statement is incorrect because migration is also a component of population change along with births and deaths.

Option 2: “The crude birth rate (CBR) is expressed as number of live births in a year per lakhs of population.” This statement is incorrect because CBR is measured per thousand population, not per lakh population.

Option 3: “Crude Death Rate (CDR) is a simple method of measuring mortality of any area.” This statement is correct because CDR measures the number of deaths per thousand population in a year and is used to measure mortality.