Cytotoxic T cells are primarily involved in ____________.

• A. Innate Immunity.
• B. Antibody production.
• C. Cell-mediated Immunity.
• D. Humoral Immunity.

Answer: (C)

Verified step by step guidance

1. Understand the role of cytotoxic T cells in the immune system. They are a type of T lymphocyte that directly kills infected cells, cancer cells, and sometimes transplanted cells.
2. Differentiate between the types of immunity: Innate immunity is the body's first line of defense and is non-specific. Humoral immunity involves B cells and the production of antibodies. Cell-mediated immunity involves T cells, including cytotoxic T cells.
3. Recognize that cytotoxic T cells are part of the adaptive immune system, specifically involved in cell-mediated immunity, which does not involve antibodies but rather the direct destruction of infected or abnormal cells.
4. Recall that cell-mediated immunity is crucial for targeting and eliminating cells that have been infected by viruses or have become cancerous, which is the primary function of cytotoxic T cells.
5. Conclude that the correct answer is 'Cell-mediated Immunity' as it directly involves the action of cytotoxic T cells in targeting and destroying infected or abnormal cells.