Final answer:
Social connectedness plays a role in healthy aging and managing Alzheimer's, with research indicating that isolation can worsen the condition.
Step-by-step explanation:
Based on the information provided, the conclusion that is BEST supported is A. Being isolated worsens the condition of Alzheimer's patients. Research shows that psychosocial factors such as social connectedness play a role in healthy aging, and therapies for Alzheimer's include behavioral and cognitive exercises. Additionally, chronic stress, such as caring for a spouse with Alzheimer's, has been linked to poorer health responses, suggesting that social and environmental factors play a significant role in managing the condition.