Explanation:
composition of population means the distribution of the number of the population according to characteristics such as age,sex,marital status,socio-economic status. ... It helps to find out the structure of population. It helps to study on various demographic indicators
D Is correct Guys Future Reference
-Dante
An unlimited government such as the human countries of North Korea, Cuba, Syria, Vietnam and China, is one where one person or a small group of people controls everything; it controls people's lives. The government's power has no limits.