The muscle that is not a part of the shoulder or arm muscle group is the pectoral muscles.
The correct option is (D) pectoral muscles.
What are the muscles of the shoulder/arm?
The arm muscle is a group of five muscles that are divided into two compartments.
- Anterior (flexor) compartment – This compartment contains biceps brachii, coracobrachialis, and brachialis muscles.
- Posterior (extensor) compartment – This compartment contains mainly the triceps brachial muscle.
The Anconeus muscle is not present in the arm region, but it is considered as arm muscle.
Thus, these are the muscles located in the arm region and the correct option is (D) pectoral muscles
Learn more about muscles, here:
https://brainly.com/question/9883108
