Final answer:
The Disengagement theory of aging is most reflective of the statement that older people tend to pull away from society and society pulls away from them. This theory suggests that withdrawing from society and social relationships is a natural part of growing old.
Step-by-step explanation:
The theory of aging that is most reflective of the statement 'In their older years, people pull away somewhat from society (e.g., by socializing less often), and society simultaneously pulls away from the older people' is the Disengagement theory. According to this theory, withdrawing from society and social relationships is considered a natural part of growing old. The theory suggests that as individuals approach death, they experience physical and mental decline, which leads them to withdraw from individuals and society. This withdrawal allows for a greater freedom from the pressure to conform. The Disengagement theory also recognizes that the experience of social withdrawal differs for men and women.