A patient presents with symptoms of increased fragility of red blood cells and muscular weakness. Which vitamin deficiency is most likely responsible for this condition?

Step-by-step solution

Vitamin E deficiency leads to increased fragility of red blood cells and muscular weakness. Vitamin K deficiency causes increased blood clotting time. Vitamin B₁ deficiency causes Beri-beri. Vitamin C deficiency causes Scurvy. Answer: Vitamin E