Concept:
Vitamin C is also known as ascorbic acid. It is a water-soluble vitamin.
Step 1: Role of vitamin C.
Vitamin C is required for collagen synthesis, wound healing, antioxidant protection, and healthy gums.
Step 2: Deficiency condition.
Deficiency of vitamin C causes scurvy.
Step 3: Symptoms of scurvy.
Scurvy may cause bleeding gums, poor wound healing, weakness, and joint pain.
Step 4: Checking other options.
Rickets is due to vitamin D deficiency.
Beriberi is due to vitamin B\(_1\) deficiency.
Night blindness is due to vitamin A deficiency.
Step 5: Final answer.
Therefore, deficiency of vitamin C causes scurvy.
\[
\boxed{\text{Scurvy}}
\]