What common aging changes are observed in the musculoskeletal system?

The choice that highlights common aging changes in the musculoskeletal system is correct due to the natural physiological processes that occur as individuals age. As people get older, there is a gradual decline in muscle mass, known as sarcopenia, leading to a decrease in overall muscle strength. This loss of strength can also result in slower movements and reduced agility, which are frequently observed in the elderly population. These changes can affect their ability to perform daily activities independently, contributing to an increased risk of falls and injuries.

In contrast, increased muscle strength and flexibility, improved posture, and balance are not typically associated with the aging process. Instead, aging often results in stiffer joints and a reduction in flexibility. Consequently, while some older adults may engage in physical activities that help maintain some level of strength and flexibility, the overarching trend in the aging musculoskeletal system involves muscle strength diminishing along with slower movement capabilities.