Each coxal (pelvic) bone consists of which three fused bones?

The correct answer identifies the three fused bones that make up each coxal (pelvic) bone: the ilium, ischium, and pubis.

The ilium is the largest and uppermost part of the pelvic bone, contributing to the structure of the pelvis and providing attachment points for various muscles. The ischium forms the lower and back part of the coxal bone, and its prominence is often referred to as the ischial tuberosity, which supports the body while sitting. The pubis is the anterior portion that comes together at the pubic symphysis, a cartilaginous joint that allows for slight movement and helps accommodate changes during activities such as walking and childbirth.

Understanding the roles and locations of these bones can help clarify why they are categorized as components of the coxal bone. The other choices do not include the correct combination of these specific bones; for instance, sacrum and coccyx are part of the vertebral column, while the pubic symphysis is a joint rather than a bone.