$A$ certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?

Match the following:

Column-$I$	Column-$II$
$(1)$ Neutrophil	$(a)$ Inflammation
$(2)$ Eosinophil	$(b)$ $6-8\%$
$(3)$ Basophil	$(c)$ Phagocytes
$(4)$ Monocytes	$(d)$ Resists infections

Identify the cells and their functions based on the provided figure:
$(a)$ Fig. $A$ - Megakaryocyte - formation of platelets
$(b)$ Fig. $B$ - Lymphocyte - synthesis of antibodies
$(c)$ Fig. $A$ - Eosinophil - secrete antihistamine
$(d)$ Fig. $A$ - Neutrophil - secrete heparin

$A$ child's blood group is '$O$'. The parents' blood groups cannot be

Which of the following is not a plasma protein?

In a healthy individual,every $100 \text{ mL}$ of blood contains $........$ grams of hemoglobin.