Answer:
2. Stimulating antibody production.
Explanation:
Organ system is the most complex in organization
Histamines are chemicals released by the body as an allergic response.They help the body by reacting when their are "intruders" so when enters, histamine acts as a messenger and sends out a signal for the body to create a reaction helping to get rid of teh intruder through some type of reaction.
NSF international because it’s the public health and safety organization
