Psychoactive substances that increase nervous system activity are called ______

Parents of a 5-year-old girl are likely to say

"She eats too much." "She isn't eating enough." "She has no control over her appetite." "She is suffering from malnutrition."

The adolescent's ability to think about their own thinking illustrates:

A) abstract thinking. B) hypothetical reasoning. C) introspection. D) logical thinking.