Question

The deficiency of which of the following vitamins causes increased fragility of red blood cells and muscular weakness?

• A. Vitamin A
• B. Vitamin K
• C. Vitamin E
• D. Vitamin D

Hint:

Each vitamin has a characteristic deficiency disease. Matching the symptoms (fragile red blood cells and muscular weakness) to the correct vitamin gives the answer.

Answer 1

The Correct Option is C

Step 1: Understand the question.
Each vitamin has its own deficiency symptoms. We must match the symptoms given (fragile red blood cells and muscular weakness) to the right vitamin.

Step 2: Recall vitamin A and K deficiencies.
Lack of vitamin A causes night blindness, and lack of vitamin K causes poor blood clotting (excessive bleeding). Neither matches the given symptoms.

Step 3: Recall vitamin D deficiency.
Lack of vitamin D causes rickets in children and soft bones (osteomalacia) in adults. This does not match either.

Step 4: Recall vitamin E deficiency.
Vitamin E is an antioxidant that protects cell membranes. Its deficiency makes red blood cell membranes weak (increased fragility) and causes muscular weakness. This matches the question exactly.

Step 5: Conclude.
The vitamin whose deficiency causes fragile red blood cells and muscular weakness is vitamin E.

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