Which of the following statements about the timing and variations in puberty is true?
A. Children in European countries mature up to a year earlier than their American counterparts.
B. For girls, menarche is considered within the normal range if it appears between the ages of 9 and 15.
C. Genes have little to do with when and how puberty develops.
D. Non-Latino White girls experience puberty earlier than African American girls.
Answer:B
Which of the following statements about the timing and variations in puberty is true?
A. Children in European countries mature up to a year earlier than their American counterparts. B. For girls, menarche is considered within the normal range if it appears between the ages of 9 and 15. C. Genes have little to do with when and how puberty develops. D. Non-Latino White girls experience puberty earlier than African American girls.