Question

the text mentions that some cancer cells are also destroyed by this response. which cell is most directly responsible for destroying a cancer cell, and why can it do so?
the helper t cell, because it manages the bodys overall health.
the b cell, because it engulfs the cancer cell and creates antibodies against it.
the regulatory t cell, because it can suppress uncontrolled cell growth.
the cytotoxic t cell, because a cancer cell can display abnormal, non - self antigens that the t cell recognizes as a threat.

Explanation:

Helper T - cells coordinate the immune response but don't directly kill cancer cells. B - cells produce antibodies but don't engulf cancer cells directly. Regulatory T - cells maintain immune balance and don't directly destroy cancer cells. Cytotoxic T - cells recognize abnormal "non - self" antigens on cancer cells and directly kill them.

Answer:

The cytotoxic T cell, because a cancer cell can display abnormal, "non - self" antigens that the T cell recognizes as a threat.