What are the characteristics of adolescence ?

Concept: Adolescence is the transitional phase from childhood to adulthood, generally ranging between 10-19 yr. During this time period, a person goes through a lot of physical changes, mental changes, and emotional changes. The person shows characteristics like rapid growth, development of secondary sexual characteristics like the growth of pubic hair, Breast, and the onset of mensuration in females while hoarseness of voice in males. Primary sex organs like the ovary and testes develop in females and males, respectively. Swing of the mood or emotion is also an indication of adolescence.
Hence, option D is the correct answer.