The answer is a. an organ :))
I believe it’s C :) mutations
Decomposers
check this link out for more information
decomposers
The most likely cause of the burning sensation is acid reflux which travels back up the esophagus and irritates the esophageal lining. The chest pain felt can feel almost like a heart attack but it is best described as referred pain from the esophagus.
Should this heartburn persist, it is highly recommended to see a physician because the acid can erode the esophagus lining & the abdominal lining leading to ulcers. Easily treatable condition.
From a personal level this is awful!
