Adequacy of ____ accounts for the average age of menarche being lowest in industrialized countries.

Question

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Adequate nutrition and medical care provide the necessary support for the growth and development of a young girl's body, including the onset of menstruation. Industrialized countries tend to have better access to these resources, resulting in a lower average age of menarche. The other choices may also play a role in a girl's development but are not as directly related to the timing of menstruation.

Adequacy of ____ Accounts for the Average Age of Menarche