Answer:
Option B
Explanation:
Microbiology is related to the study of microorganisms that are not visible through naked eyes. While virology is the study of viruses. Hence, both option c and d are incorrect. Immunohematology is associated with the study of antigens and antibodies of RBCs in case of blood transfusion.
However, in immunology, the entire immune system is studied inclusive of antigen and antibody interaction, infectious diseases, transplant issues, hypersensitivity etc.
Hence, option B is correct
