Research has revealed that using ecstasy does not have an enduring adverse effect on memory

Nearly half of all deaths in the United States can be attributed to risky behaviors, such as smoking, unhealthy eating, sedentary lifestyles, and alcohol abuse

Indicate whether the statement is true or false

Criterion-related validity is meaningful when

a. the predictor is stable. b. the criterion is valid and reliable. c. the criterion is valid but not necessarily reliable. d. the predictor is reliable.