The Theory of Personal Control Developed by Heckhausen and Schulz

The theory of personal control developed by Heckhausen and Schulz proposes that as people get older,they are more likely to exert control in their lives by using

A) primary control strategies in which they change their environment.
B) secondary control strategies in which they change their goals.
C) possible selves in which they try to remember their past behaviors.
D) problem-focused coping mechanisms.