Which of the following vitamin's absorption is most affected by the disorder atrophic gastritis?

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Atrophic gastritis is a condition that causes the lining of the stomach to thin and become inflamed, which can lead to a decreased ability to absorb vitamin B12. Vitamin B12 is essential for nerve function and red blood cell formation, and its absorption requires a protein called intrinsic factor that is produced in the stomach. Therefore, atrophic gastritis can lead to a deficiency in vitamin B12, also known as pernicious anemia. The other vitamins listed (choline, vitamin C, and pantothenic acid) are not primarily absorbed in the stomach and are not as affected by atrophic gastritis.

Which of the Following Vitamin's Absorption Is Most Affected by the Disorder