Multiple choice The deficiency of Niacin causes pellagra marasmus kwashiorkar goitre Reveal answer Fill a bubble to check yourself A Correct answer Explanation Niacin (vitamin B3) deficiency causes pellagra, characterized by the 3 Ds: dermatitis, diarrhea, and dementia. Marasmus and kwashiorkor are protein-energy malnutrition disorders, while goitre results from iodine deficiency.