Answer:
The muscle that has its inferior attachment on the manubrium and sternal end of the clavicle, and its superior attachment on the mastoid process is the sternocleidomastoid muscle. This muscle is located in the neck and is responsible for rotating the head to the opposite side and tilting the head to the same side. It is named for its attachments to the sternum, clavicle, and mastoid process of the temporal bone.