Question

question 8 of 10 which best describes how a vaccine works? a. it increases the production of lysozymes in the pancreas. b. it causes the formation of many new lymph nodes. c. it forces the body to create large numbers of white blood cells. d. it creates a small infection to help the body fight later infections.

Explanation:

A vaccine contains weakened or inactivated pathogens or their components. When introduced into the body, it triggers an immune - response similar to a small, harmless infection. This primes the immune system to recognize and fight off the actual pathogen if encountered later. Lysozymes are not directly related to vaccine action in the described ways in options A and B. Vaccines do not cause the formation of new lymph nodes (option C) or a large - scale increase in white blood cells in the way described in option D.

Answer:

D. It creates a small infection to help the body fight later infections.