The correct option is B Liver
The alimentary canal is a long tube that carries the food we eat. It begins at the mouth (buccal or oral cavity), passes through the pharynx, oesophagus or food pipe, stomach, small intestine, large intestine, rectum and finally ends at the anus. The liver is an accessory gland that helps in the digestion of food by producing bile, which helps in the digestion of fat in the small intestine but the food does not pass through it, therefore the liver is not a part of the alimentary canal. The stomach, oesophagus and rectum are the parts of the alimentary canal.