Which of the following bones is one of three that fuse to form the pelvic ring?

The pelvic ring is composed of three bones: the ilium, the pubis, and the ischium, which together form the structure known as the pelvis. Among the options presented, the pubis is indeed one of these three bones.

The ilium, another one of the pelvic bones, forms the upper part of the pelvis and contributes to the overall shape and support. The ischium contributes to the lower and back part of the pelvis, providing structure and support when sitting. The coccyx, on the other hand, is not part of the pelvic ring but rather is the terminal bone of the vertebral column. Therefore, it does not fuse with the ilium or ischium to form the pelvic ring.

Understanding the role of the pubis within the pelvic ring is crucial in anatomy, as it plays a key role in weight-bearing and movement, along with its involvement in the structure that protects internal organs within the pelvic cavity.