Answer:
Levator scapulae.
Step-by-step explanation:
Levator scapulae muscle is present at the back of the neck side and originated from the posterior tubercle of the cervical vertebrae. Dorsal scapular artery supplies blood in this muscle.
The pulling and pushing assessment, the trainer notice that client shows shoulder elevation. This elevation may occur due to the over activation of the levator scapulae muscles.
Thus, the correct answer is option (d).