Solution:Concept: Puberty is the period during which growing boys or girls undergo the process of sexual development. Puberty consists of an order of physical stages that outgrow the physical features connected with mature males and females like growth of pubic hair.
Growing males and girls go through the process of sexual maturation during puberty.
It is detailed physiologically, including the development of breasts, the development of the sebaceous glands, the formation of pubic hair, the hoarseness of male voices, the development of muscles, and the physiological effects of hormones like oestrogen and testosterone.
Puberty is a time when sexual development takes place in a predetermined order.
For girls, puberty typically begins at age 11, whereas for boys, it typically begins at age 12. Due to the partial inheritance of puberty and ecological factors like nutrition and exercise, it is dependent on the individual.
Hence, the correct answer is option 4.