Question

which types of anemias are caused by a deficiency in b12?
a) factor deficiency
b) production defect
c) aplastic
d) depletion

Explanation:

Vitamin B12 is essential for DNA synthesis in red blood cell production. A deficiency leads to a factor (B12) deficiency, affecting red blood cell maturation. Production defect anemia usually relates to bone - marrow issues (not directly B12 deficiency). Aplastic anemia is due to bone - marrow failure (not B12). Depletion anemia is a general term not specific to B12 deficiency mechanism.

Answer:

A. Factor deficiency