In the United states,the average age of menarche:
A)has increased rapidly over the last century.
B)has declined significantly since the mid-nineteenth century.
C)is likely to decrease substantially in the coming decades.
D)has remained unchanged over the last century expect for a slight increase in the incidence of precocious puberty.

Question

Quizplus · Accepted Answer

In the United States-where children mature up to a year earlier than children in European countries-the average age of menarche has declined significantly since the mid-nineteenth century.Fortunately,however,we are unlikely to see pubescent toddlers,since what has happened in the past century is likely the result of improved nutrition and health.

In the United States,the Average Age of Menarche