Final answer:
Resocialization refers to the process of unlearning old behaviors and adopting new ones suitable for a new role or life situation. It is often necessary during significant life changes and can be more stressful than initial socialization because it involves altering established habits.
Step-by-step explanation:
The definition of resocialization is the process by which old behaviors are removed and new behaviors are learned to match a new position in life (D). This is a vital process when individuals enter new phases of life or social environments where previous norms and behaviors are no longer applicable or useful, such as moving into a senior care center, entering boarding school, or being incarcerated. Unlike normal socialization, which is more about learning and adapting to societal norms from the start, resocialization often requires unlearning and replacing well-established behaviors, making it a more stressful and challenging process.