Among females in the U.S. population, which group is the earliest to show visible signs of puberty?

Name: Among females in the U.S. population, which group is the earliest to show visible signs of puberty?
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Question

Quizplus · Accepted Answer

African-American girls, on average, begin puberty earlier than girls from other racial or ethnic groups in the United States. This includes the development of secondary sexual characteristics such as breast development and the onset of menstruation.

Among Females in the U