A nurse is collecting data on an older adult client who is experiencing age related changes. Which of the following findings should the nurse expect?

A. Muscle mass typically decreases with aging due to sarcopenia, leading to reduced strength and endurance rather than an increase. B. Aging is associated with loss of bone density (osteopenia or osteoporosis), not increased calcification. Bones become more fragile and prone to fractures. C. This is an expected age-related musculoskeletal change. Cartilage thins, ligaments lose elasticity, and synovial fluid decreases, leading to reduced flexibility and stiffness in joints. D. Balance generally declines with age due to decreased muscle strength, impaired proprioception, and slower reflexes, increasing the risk of falls.