Age Is Not a Powerful or Precise Predictor of Health

Age is not a powerful or precise predictor of health because ________.

A) there are substantial variations at all ages in the health, resilience, and susceptibility of people
B) there is very little variability in the potential for healthy living, especially in older age groups
C) health and life expectancy at difference ages in different populations are very similar
D) the principal determinants of health and life expectancy are genetic