Question

multiple choice question
sebum, complement, interferons and cytokines are examples of the component of innate immunity known as
chemical mediators
immune cells
physical barriers

Explanation:

Sebum, complement, interferons and cytokines are chemical - based substances that play roles in the innate immune response. Chemical mediators are non - cellular components that help in immune reactions. Immune cells are actual cells like macrophages etc., and physical barriers are structures like skin. These substances are not cells or physical structures but chemical entities involved in immunity.

Answer:

A. chemical mediators