Which of the following statements is true regarding the effects of aging on bones?

As individuals age, the composition and structure of their bones undergo significant changes. One key change is that bones become more porous over time. This increase in porosity is primarily due to the loss of bone mass and the alteration of bone remodeling processes, which can lead to conditions such as osteoporosis. When bones are more porous, they are less dense and more vulnerable to fractures, making them break more easily compared to younger, denser bones.

In contrast, the other statements do not accurately reflect the biological changes that occur with aging. For example, bones do not become denser; instead, they lose density as mineral content decreases. Additionally, older bones tend to break more easily rather than less, and the structural integrity of bones is compromised rather than maintained. Thus, understanding these age-related changes is crucial for promoting bone health and preventing fractures in older populations.