Match List-I with List-II and choose the correct answer from the options given below.

List - I	List - II
(a) Scapula	(i) Cartilaginous joints
(b) Cranium	(ii) Flat bone
(c) Sternum	(iii) Fibrous joints
(d) Vertebral column	(iv) triangular flat bone

To find the correct match, let us analyze the skeletal structures in List-I and pair them with their descriptions and joint types in List-II:

(a) Scapula:
The scapula, commonly referred to as the shoulder blade, is a large, triangular flat bone situated in the dorsal part of the thorax between the second and seventh ribs. Therefore, (a) matches with (iv) triangular flat bone.

(b) Cranium:
The cranial bones form the protective outer shell of the brain. They are held together tightly by sutures, which are a type of immovable joint made of dense fibrous connective tissue. Therefore, (b) matches with (iii) Fibrous joints.

(c) Sternum:
The sternum, or breastbone, is a flat bone located on the ventral midline of the thorax to which the true ribs are attached. Therefore, (c) matches with (ii) Flat bone.

(d) Vertebral column:
The vertebral column consists of individual vertebrae stacked on top of one another. The joints between adjacent vertebrae are connected by pads of fibrocartilage, known as intervertebral discs, which allow limited movement. Therefore, (d) matches with (i) Cartilaginous joints.

By putting all the individual matches together, we get the final combination:
a - iv, b - iii, c - ii, d - i