Which of the Following Is True of Preindustrial Societies

Which of the following is true of preindustrial societies?

A) People did not need to know how to read and write to make contributions to society.
B) People did not work as they grew old.
C) The transition from childhood to adulthood generally occurred between the ages of 18 to 21.
D) The transition from childhood to adulthood generally occurred between the ages of 16 to 18.