Answer:
4) action stage
Step-by-step explanation:
The Stages of Change Model is based on the premise that people change their behavior gradually and continuously. They start from the complete lack of awareness of the need for change, make the decision to change, and exercise the new conduct until it becomes a habit. This behavior change process is divided into five successive stages of change. The stage at which one finally changes one's behavior is called the action stage.
It is only at the action stage that Adam will stop smoking. This is because it is at this stage that changes are made to a person's behavior.