If Researchers Measure an Individual's Self-Concept at Ages 10,20,30,and 40

Multiple Choice

If researchers measure an individual's self-concept at ages 10,20,30,and 40 years,where are they likely to find the most stability?

A) When measured at the age of 10 and then again at the age of 30
B) When measured at the age of 20 and then again at the age of 30
C) When measured at the age of 20 and then again at the age of 40
D) When measured at the age of 10 and then again at the age of 40