Elbow joint is an example of (a) pivot joint (b) hinge joint (c) gliding join (d) ball and socket joint

Correct Option (b) hinge joint
Explanation:

In hinge joint, the convex surface of one bone fits into the concave surface of another bone, e.g. knee, elbow and interphalangeal joints.

Pivot joint, one bone is fixed and second articulated, e.g. atlas and axial of skull rotate with axis vertebra.

Gliding joints primarily permit side-by-side and back-and-forth gliding movements, e.g. intercarpal joints and intertarsal joints.

In ball and socket joint, ball of one bone articulates in socket of another bone, e.g., head of humerus and glenoid cavity of pectoral girdle.