Answer the following question given this paragraph: 

Puberty is the stage of life when a child becomes sexually mature. Puberty lasts from about 10 to 16 years of age in girls and from about 12 to 18 years of age in boys. In both girls and boys, puberty begins when the pituitary gland signals the gonads (ovaries or testes) to start secreting sex hormones (estrogen in girls, testosterone in boys). Sex hormones, in turn, cause many other changes to take place.


Q: What is the name of the stage of life when a child becomes sexually mature?

 Choices:

- adolescence

- growth spurt

- maturity

- puberty

A:
puberty
