Answer:
The correct answer is B circulatory system
Step-by-step explanation:
Blood is an important element of circulatory system.Blood composed of blood plasma and blood cells.
There are 3 types of blood cells
Red Blood Cells
White Blood Cells
Platelets
White Blood cells play an important role to defend the body from harm.The are two 2 types of White Blood Cells
1 Granulocytes they are 3 types
A Neutrophils They helps in the destruction of foreign antigen by Phagocytosis .
B Eosinophils They play an important role in generating immune response in our body along with the help of IgE antibody.
C Basophils They contain various Bioactive compounds such as histamine, heparine. Histamine are mainly released from the mast cell and along with the help of IgE they play an important role in allergic reactions.
2 Agranulocytes They are of 2 types
A Monocytes The act as antigen presenting cell .
B Lymphoctyes they are of 2 types
B lymphocyte cell They regulate Humoral immune response.
T lymphocyte cell They regulate cell mediated immune response.