Which of the following age group belongs to the adolescents population?

The correct option is 10-19 Years.

Adolescence is a transitional stage of physical and psychological development that generally occurs during the period from puberty to adulthood. According to the World Health Organization (WHO), adolescents are defined as individuals in the age range of 10 to 19 years.

Let's break down why this age group is classified as the adolescent population:
1. Biological Changes: Around the age of 10, the human body begins to undergo significant hormonal changes leading to puberty, which marks the start of adolescence.
2. Social and Cognitive Development: This period (10-19 years) represents the transition from childhood dependency to young adult independence, involving crucial emotional, social, and cognitive growth.
3. Standard Definition: Global health and development organizations universally adopt the 10-19 years range to implement health policies and educational programs targeted specifically at adolescents.

Therefore, the age group that belongs to the adolescent population is 10-19 Years.