What is the typical sequence of pubertal changes in girls?

• A. Thelarche (breast development) first, followed by pubarche, growth spurt, then menarche
• B. Menarche first, followed by thelarche
• C. Growth spurt first, followed by thelarche, then pubarche
• D. Pubarche first, followed by thelarche

Answer: (A)

Puberty in girls typically starts with breast development because estrogen triggers thelarche. As estrogen rises and adrenal androgens come into play, pubic hair appears, marking pubarche. With ongoing maturation, a rapid growth spurt follows, driven by growth hormone assisted by estrogen, and then the onset of menstruation (menarche) occurs after the growth spurt, usually about 2 years after thelarche. This sequence—breast development first, then pubic hair, then the growth spurt, then menarche—reflects the typical hormonal progression that guides physical changes during puberty.