Question

multiple choice question
what do the left common carotid, brachiocephalic artery and left subclavian all have in common?
they all carry blood to the head.
they all carry blood to the arms.
they all originate on the aortic arch.

Explanation:

The left common carotid, brachiocephalic artery, and left subclavian artery all originate from the aortic arch. The brachio - cephalic artery further divides to supply blood to the head and right arm, the left common carotid supplies blood to the head and neck, and the left subclavian supplies blood to the left arm. But their commonality is their origin from the aortic arch.

Answer:

They all originate on the aortic arch.