Final answer:
The organs mentioned, including the stomach, small intestine, large intestine, esophagus, liver, pancreas, gall bladder, and anus, come together to form the digestive organ system.
Step-by-step explanation:
The digestive system is made up of various organs, including the stomach, small intestine, large intestine, esophagus, liver, pancreas, gall bladder, and anus, which work collaboratively to process the food we eat. When considering the hierarchy of biological organization, these components come together to form an organ system, as they collectively perform a series of functions aimed at a common goal. Within this organ system, the mouth, esophagus, stomach, small and large intestine comprise the alimentary canal itself, and the liver, gallbladder, and pancreas serve as accessory organs, contributing essential digestive enzymes and other chemicals necessary for the digestion of food.
Thus, the correct answer to the question about the level of body organization these digestive components form is 1) Organ system.