Step 1: Match each vitamin with its known deficiency disease.
(a) Vitamin B\(_1\) (Thiamine): Deficiency of Thiamine causes the disease Beriberi, which affects the nervous system and heart. It can also lead to stunted or
retarded growth in children. So, a plausible match is
(iii).
(b) Vitamin B\(_2\) (Riboflavin): Deficiency of Riboflavin can cause cheilosis (cracks at the corners of the mouth), skin disorders, and a
burning sensation of the skin or tongue. So, a plausible match is
(iv).
(c) Vitamin B\(_6\) (Pyridoxine): Deficiency of Pyridoxine can lead to neurological symptoms, including depression, confusion, and
convulsions. So, a plausible match is
(i).
(d) Vitamin B\(_{12}\) (Cobalamin): Deficiency of Vitamin B\(_{12}\) causes pernicious anemia, which is a type of megaloblastic anemia characterized by a
deficiency of red blood cells (RBC). So, a plausible match is
(ii).
Step 2: Compile the matches.
The most likely correct matches are:
- a \(\rightarrow\) iii
- b \(\rightarrow\) iv
- c \(\rightarrow\) i
- d \(\rightarrow\) ii
Step 3: Final Answer.
This combination corresponds to option (B).