Which of the Following Pieces of Data Would Be a Good

Which of the following pieces of data would be a good argument in favor of the proposition that age-linked personality changes in adulthood are really the result of role changes correlated with age?

A) Working women of whatever age are more independent and assertive than are homemakers.
B) The majority of women studied have reported a major life transition at roughly age 30.
C) The decreases in autonomy and independence between midlife and old age is accompanied by a loss of roles.
D) There is strong consistency over time in traits such as extraversion.