Correct Answer: A

Sister Callista Roy's Adaptation Model (1970) proposes that humans adapt to stimuli through four adaptive modes:

1. Physiological-Physical Mode: Basic physiological needs (oxygenation, nutrition, elimination, activity, protection)
2. Self-Concept Mode: Physical self and personal self — one's beliefs and feelings about oneself
3. Role Function Mode: Roles one occupies in society (primary, secondary, tertiary)
4. Interdependence Mode: Relationships and support systems — giving and receiving love, respect, and value

Roy's goal is to promote adaptation in all four modes, thereby contributing to the person's health, quality of life, and dignified death.