This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
Muscle attached to the marked area 
Select and explain. 
A. Masseter, B. Temporalis, C. Medial pterygoid, D. Lateral pterygoid
A: Masseter
Answer: A: Masseter 
Explanation: Masseter arises from zygomatic arch and inses onto lateral aspect of ramus and angle of the mandible.Its innervated by the masseteric nerve from the anterior division of the mandibular nerve.Action is to elevate and protract the angle of the mandible