Which of the following are the three important pelvic bones from the list below?

The pelvic bones (hip bones) are a group of bones in the lower torso that form the pelvis, which serves as a supporting structure for the spine and legs. 

They are made up of three bones: the ilium, pubis, and ischium. They support and stabilize the pelvis while also protecting the internal organs. 

The thorax is the area of the chest that includes the rib cage and the sternum. It safeguards the heart, lungs, and other vital organs.

The bones that make up the spinal column are known as vertebrae.
Cartilage is a type of flexible connective tissue found throughout the body, including the joints, where it absorbs shock and allows for smooth movement.