Answer:
Helper T cells.
Explanation:
The immune system of the body helps to fight against the pathogens that harm the organisms. The different immune cells present in the body are macrophages, monocytes, lymphocytes and antibodies.
T cell and B cells are the two lymphocytes present in the body. The T helper cells plays an important role in the cell mediated immunity and fight against the virus as well. The damage of T helper cells has the greatest impact on the immune response of the body.
Thus, the answer is option (1).
