Option 1 -> Vitamin D deficiency causes rickets and osteomalacia, affecting bone health.
Option 2 -> Vitamin A deficiency leads to night blindness and impaired immune function.
Option 3 -> Vitamin B deficiencies cause conditions like beriberi and pellagra, but not scurvy.
Option 4 -> Vitamin C deficiency directly causes scurvy, characterized by bleeding gums, weakness, and poor wound healing.
Hence, Option 4: Vitamin C -> Scurvy is a disease caused by severe and prolonged deficiency of Vitamin C (ascorbic acid), which is essential for collagen synthesis. Symptoms include bleeding gums, bruising, fatigue, and impaired wound healing. Historically common among sailors with limited access to fresh fruits and vegetables -> correct