Which of the Following Is a Significant Observation by Neugarten

Which of the following is a significant observation by Neugarten regarding social clocks?

A) Social clocks are more rigid than they were before.
B) Individuals whose lives are synchronized with the social clocks are less stressed.
C) Younger adults below 25 years are excluded from the social clock age bracket.
D) Social clocks are more important for males than for females.