What marks the onset of puberty in girls?
A)Slight deepening of the voice.
B)Increase in breast size.
C)A growth spurt.
D)The first menstrual period.

Question

Quizplus · Accepted Answer

The first menstrual period, also known as menarche, is the clear marker for the onset of puberty in girls. While other changes, like breast development and growth spurts, may occur earlier or later, menarche marks the beginning of the reproductive phase of a woman's life.

What Marks the Onset of Puberty in Girls