The correct option is D ln between two vertebrae
Between adjacent vertebrae from first to sacrum there are intervertebral discs. They are fibro-cartilaginous. Each disc is composed of the outer fibrous ring consisting fibro-cartilage, called as annulus fibrosis and the inner soft, pulpy highly elastic structure called as the nucleus pulpous. The disc permits various movement of the vertebral column, absorb shock and form a strong joint.