The answer is e) bariatric
The term "metabolic" refers to the biochemical processes that occur within a living organism to maintain life. It is not specifically related to the treatment of obesity.
"Ischemic" pertains to a restriction in blood supply to tissues, causing a shortage of oxygen and glucose needed for cellular metabolism. It is not related to obesity treatment.
"Gastric" relates to the stomach. While some obesity treatments involve the stomach, such as gastric bypass surgery, the term itself is not specific to the field of medicine that specializes in treating obesity.
"Endoscopic" refers to procedures that involve the use of an endoscope to examine the interior of a hollow organ or cavity. It is not specific to obesity treatment.
"Bariatric" is the term specifically used to describe the branch of medicine that deals with the causes, prevention, and treatment of obesity. This includes various surgical procedures, such as gastric bypass and sleeve gastrectomy, aimed at weight loss.