Which aging change relates to mobility, osteoporosis, and arthritis?

• A. Hormonal changes
• B. Immune changes
• C. Musculoskeletal changes (mobility, osteoporosis, arthritic)
• D. Reduced stamina

Answer: (C)

Musculoskeletal aging is the pattern that best ties together mobility, osteoporosis, and arthritis. As people age, bones can lose density (osteoporosis), joints can wear down or become inflamed (arthritis), and muscles can lose strength and mass (sarcopenia). These changes interact to reduce range of motion, stability, and the ability to move comfortably or safely, which is why mobility declines. Hormonal shifts can contribute to bone loss, and immune factors can play a role in inflammatory arthritis, but the combined impact on movement and joint/bone health centers on the musculoskeletal system. Reduced stamina, on the other hand, maps more to endurance and cardiovascular conditioning than to the direct structural changes affecting bones and joints.