Starting at the spinal cord, the subdivisions of the brachial plexus are (in order) roots, trunks, divisions, and cords trunks, divisions, cords, and roots roots, divisions, cords, and trunks divisions, roots, trunks, and cords

The correct answer is ; Roots, trunks, divisions, and cords. 
The brachial plexus is a network of nerves that are formed by the lower cervical nerves and upper thoracic ventral nerve. It is located in the neck extending into the axilia posterior to the clavicle. That is from the spinal cord, through the cervico axillary canal in the neck, over the first rib, and into the ampit. 

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