Concept:
Scurvy is a nutritional deficiency disease caused by lack of Vitamin C (Ascorbic acid).
Vitamin C is essential for:
• Formation of collagen
• Healthy gums and skin
• Wound healing
• Maintenance of blood vessels
Deficiency of Vitamin C results in bleeding gums, weakness, poor wound healing, and scurvy.
Step 1: Analyze option A.
Vitamin D deficiency causes rickets and osteomalacia.
Hence, option A is incorrect.
Step 2: Analyze option B.
Vitamin K is mainly involved in blood clotting.
Hence, option B is incorrect.
Step 3: Analyze option C.
Vitamin E deficiency is associated with neurological and muscular problems.
Hence, option C is incorrect.
Step 4: Analyze option D.
Scurvy is caused due to deficiency of Vitamin C.
Hence, option D is correct.
Therefore, the correct answer is:
\[
\boxed{(D)\ \text{Vitamin C}}
\]