Final answer:
The internal carotid artery enters the cranium to supply the brain with fresh, oxygenated blood. This artery, along with the vertebral arteries, is one of the main suppliers of blood to the human brain.
Step-by-step explanation:
The correct answer is c. internal carotid artery.
The internal carotid artery enters the cranium to supply the brain with fresh, oxygenated blood. This artery, along with the vertebral arteries, is one of the main suppliers of blood to the human brain.
When blood flow to the brain is interrupted, it can result in a cerebrovascular accident or stroke, causing the death of brain cells.