What feature do bones provide to the skeleton?

Bones primarily provide protection to the skeleton, which is vital for safeguarding the body's internal organs. For example, the skull encases the brain, while the rib cage protects the heart and lungs from physical trauma. This protective function is crucial in preventing injuries that could occur from impacts or falls. By forming a hard structure around delicate organs, bones play an essential role in maintaining overall health and safety.

Elasticity is not a characteristic of bones; they are rigid structures. Mobility is primarily facilitated by joints and muscles rather than the bones themselves. While bones do contribute to body weight, they certainly do not create a weightless environment; rather, they provide the necessary support and structure that allow for movement and stability in the body.