The erector spinae muscle extends the vertebreal column. [1] It is formed of 3 muscles and its fibers run more or less vertically throughout the lumbar, thoracic and cervical regions. It lies in the groove to the side of the vertebral column. In cervical region it is covered by nuchal ligament and in thoracic and lumber region by thoracolumbar fascia.
I would say number 4 because she has a great health by exercising 4 times a week and a balanced dieys and gets a good nights sleep. She is Good with her social skills.
