What is the normal age range for onset of puberty in females?

• A. 6-9
• B. 8-13
• C. 9-12
• D. 10-14

Answer: (B)

Puberty in females begins when the hypothalamic–pituitary–gonadal axis is activated, leading to estrogen production and the first signs of puberty such as breast development. The typical age range for this onset is about eight to thirteen years. Within this window, some individuals start a bit earlier and others a bit later, but starting before eight is considered precocious and starting after thirteen is often described as delayed puberty. Menarche usually occurs a bit later, around twelve to thirteen years, but the initial puberty signs begin within the eight-to-thirteen window. Among the options, eight to thirteen best matches the widely cited normal range for puberty onset in girls.