which is not the posterior group of muscles of the shoulder Girdle?

Correct option is D

The correct answer is (d) The infraspinatus is a muscle located on the posterior aspect of the shoulder girdle, specifically within the infraspinous fossa of the scapula. It originates from the infraspinous fossa and inserts onto the middle facet of the greater tubercle of the humerus. The infraspinatus is one of the four muscles of the rotator cuff and plays a crucial role in external rotation and stabilization of the shoulder joint. It works in conjunction with the teres minor to externally rotate the humerus and prevent anterior displacement of the humeral head during arm movements.