B.produce antibodies when triggered by antigens
Answer:
The body needs protein to build and repair tissues to make hormones, enzymes, body chemicals e.t.c.
The body also uses protein as a building block of blood , bones, skin , muscles, cartilage e.t.c.
Explanation:
The human reproductive system is regulated by the endocrine system.
I believe that it is producer, herbivore, carnivore, decomposer Thanks for posting your questions on Brainly