Question

Across cultures, the average age at which a girl reaches puberty is _______ years of age. The average age at which a boy reaches puberty is _______ years of age.

A) 11; 13
B) 13; 11
C) 15; 14
D) 14; 15

Answer 1

The average age at which girls reach puberty is approximately 11 years, while boys reach puberty around 13 years of age, corresponding to answer choice A) 11; 13.

Step-by-step explanation:

Across cultures, the average age at which a girl reaches puberty is typically around 10 to 11 years of age. Puberty in girls is characterized by the development of breast tissue, the growth of axillary and pubic hair, and the start of menstruation (menarche). On the other hand, the average age at which a boy reaches puberty is generally between 11 and 13 years of age, starting with the development of external genitals and pubic hair.

Given the information, the correct answer to the question is: Across cultures, the average age at which a girl reaches puberty is 11 years of age. The average age at which a boy reaches puberty is 13 years of age, which matches with answer choice A) 11; 13.