Which of the following girls would be expected to have her first menstrual period at the youngest age?
A) a girl raised in the Czech Republic
B) a girl raised in the United States
C) a girl raised in the Kikuyu tribe in Africa
D) a girl raised in the Bindi tribe in New Guinea

Question

Quizplus · Accepted Answer

The book notes that in some parts of the world, menarche occurs considerably later than it does in the United States. For example, the average girl in the Czech Republic has her first period at age 14; among the Kikuyu of Kenya, the average age is 16; and for the Bindi of New Guinea, it is 18. In the U.S. the average age at menarche is currently 12½.

Which of the Following Girls Would Be Expected to Have