The Connection That Lewis Terman Found Between the Characteristic of Conscientiousness

The connection that Lewis Terman found between the characteristic of conscientiousness or social dependability in childhood and the reduced likelihood of an individual dying in any given year during adulthood can be partially explained by the

A) type of parenting style that the children's parents used.
B) fact that these children tended to come from smaller families.
C) children's ability to delay gratification.
D) fact that these individuals were less likely to smoke and drink to excess.