social studies
posted by clara .
An Li reached puberty at age 12, and John Smith retired at age 65. An Li's and John Smith's experiences are examples of:
A. normative events.
B. nonnormative influences.
C. critical periods.
D. risk factors.
I chose A. but now reading a little more into it, I'm not sure if B is the right answer. Please help.

A is correct.
http://www.indiana.edu/~famlygrf/units/family.html
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