Riboflavin deficiency causes which of the following diseases?

Correct answer: (d) Cheilosis

Explanation

Deficiency of Riboflavin (Vitamin B2) causes Cheilosis – cracked, fissured lips and inflamed mouth corners.

The distractors arise from other deficiencies: Pellagra (B3/niacin), Scurvy (Vitamin C), and Beriberi (B1/thiamine).