Answer:
Latissimus dorsi
Explanation:
Latissimus dorsi -
It refers to the flat muscle which is located on the sides of the arms and covers the midline of the back .
Latissimus dorsi is the largest muscle present in the upper body of the human being .
The function of this muscle is adduction , extension, transverse extension or horizontal abduction .
It plans an important role in the lateral flexion of the lumbar spine .
Hence , from the given question ,
The correct answer is Latissimus dorsi .
