A new virus, C75AP, is identified that can suppress the immune response for certain types of lymphocytes by infecting them. If infected, the loss of function for which lymphocyte would have the greatest impact on subsequent immune responsehelper T cellshelper C cellshelper Z cells

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).

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