At what age do most males reach adult height?

The most common indicator for the offset (end) of adolescence is

A. achievement of sociocultural maturity B. achievement of maximal height C. reaching voting age D. graduating from high school

An industrial-organizational psychologist is studying video

game designers. This psychologist carefully questions game designers about how much stress they experience. These interviews would constitute the first step in the scientific method referred to as a. making observations. b. testing the hypothesis. c. theory building. d. defining the problem.