[Expert Solution]: Mr

Mr. Stockton is a 64 -year-old man who was admitted to the emergency room with extreme weakness, poor coordination, back-and-forth eye movements, and mental confusion. He had a CT scan to check for signs of stroke, but his results came back normal. After speaking with his family, his doctor learned that Mr. Stockton has a history of alcohol abuse. Based on this information, the physician should test the patient for a deficiency of