Which of the Following Statements Is an Example of Selective

Multiple Choice

Which of the following statements is an example of selective mortality?

A) Today's older adults are less likely to seek mental health services because when they were growing up,mental illness was stigmatized.
B) Because exercise has become widely promoted in the media,many older adults are now exercising and thus healthier than predicted by earlier measures of their physical well-being.
C) Because of the effects of aging on the brain,older adults do worse than younger adults on measures of "fluid" intelligence.
D) In a longitudinal study,many of the elderly subjects died before the follow-up data was collected.