Concept:The hepatic portal vein carries nutrient-rich blood from the alimentary canal to the liver for processing.
Explanation:Blood leaving the intestines and other digestive organs is rich in absorbed nutrients.
This blood does not return directly to the heart.
Instead, it is collected by the hepatic portal vein and taken to the liver.
The liver then filters toxins and stores or modifies the nutrients.
The hepatic artery supplies oxygenated blood to the liver, while the hepatic vein carries blood away from the liver.
The mesenteric artery supplies blood to the intestines, not to the liver.
Therefore, the vessel that connects the alimentary canal to the liver is the hepatic portal vein.
Answer:C. hepatic portal vein