Acid is secreted by the cells in the stomach. the proton (h+) component is obtained from the dissociation of carbonic acid, using the enzyme carbonic anhydrase.

c is the correct answer hope this !

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.