How many bones comprise the appendicular skeleton?

The appendicular skeleton consists of 126 bones, which includes all the bones of the limbs and the girdles that connect them to the axial skeleton. This division of the skeleton allows for the mobility and manipulation of the body as it includes the bones of the arms, legs, shoulders, and pelvis. The total count of 126 bones is crucial for understanding human anatomy, particularly related to movement and support in various activities. In contrast, the total number of bones in an adult human body is generally cited as 206, which accounts for the axial skeleton (composed of the skull, vertebral column, and ribs) as well as the appendicular skeleton. Thus, the correct option highlights the specific focus on the appendicular skeleton's role in facilitating movement.