Short-term memory has ______ primary tasks

All of the following are true about stress EXCEPT

A) circumstances that are ambiguous typically produce more stress that those that are precise. B) peripheral events are more likely to produce stress than ones that are central to the adolescent's life. C) events that are uncontrollable are more stressful that those that can be controlled. D) negative events are more apt to produce stress than positive ones.

In 1999, what percentage of 36-month-old toddlers had been toilet trained?

a) 60% b) 50% c) 45% d) 25%