Which of the following is considered a component of innate immunity?

• A. B lymphocytes
• B. Memory T cells
• C. Antibodies
• D. Neutrophils

Answer: (D)

Verified step by step guidance

1. Understand the difference between innate and adaptive immunity. Innate immunity is the body's first line of defense and responds quickly and non-specifically to pathogens, while adaptive immunity is specific and involves memory cells.
2. Identify the components listed in the problem: B lymphocytes, Memory T cells, Antibodies, and Neutrophils.
3. Recall that B lymphocytes, Memory T cells, and Antibodies are part of adaptive immunity because they provide specific responses and immunological memory.
4. Recognize that Neutrophils are a type of white blood cell involved in the innate immune response; they act quickly to engulf and destroy pathogens without prior exposure.
5. Conclude that Neutrophils are a component of innate immunity, distinguishing them from the other options which belong to adaptive immunity.