Organs are structures made from a group of the same and different tissues. The breakdown of the tissue lining from acid shows that the organ is the stomach. Thus, option A is correct.
What is the digestive system?
The digestive system is an organ system that includes the stomach the organ involved in the digestion of the foods into a small particle that provides energy to the body. The acid is present in the stomach.
The nutrients from the digested food are transported into blood streams by the small intestine, and the swallowed food from the mouth enters the food pipe. The rectum is involved in the elimination of the wastes hence these options are not correct.
Therefore, option A. the breakdown of the tissue lining is the problem of the stomach.
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