Joanne Is Discussing the Secular Trend in Menarche

Multiple Choice

Joanne is discussing the secular trend in menarche. Which is NOT a statement she should make?

A) "It is continuing-girls are still getting their period at younger ages."
B) "It may be promoted, in part, by the growth in single-parent mother-headed families."
C) "It may be promoted, in recent decades, by the obesity epidemic."
D) "It started to take place about 30 years ago."