To solve this problem, we need to match the cells in Column I with their corresponding functions in Column II. Let's analyze each cell type:$\newline \bullet$a. Eosinophils:$\newline$ - Eosinophils are white blood cells that release histaminase and other destructive enzymes.$\newline$ - This matches with iii.$\newline \bullet$b. Basophils:$\newline$ - Basophils release granules containing histamine, which play a role in inflammatory responses.$\newline$ - This matches with iv.$\newline \bullet$c. Neutrophils:$\newline$ - Neutrophils are involved in phagocytosis, engulfing and digesting pathogens.$\newline$ - This matches with ii.$\newline \bullet$d. Lymphocytes:$\newline$ - Lymphocytes are key players in the immune response, including B cells and T cells.$\newline$ - This matches with i.$\newline$Now, let's match the items from Column I with Column II:$\newline a \rightarrow iii, b \rightarrow iv, c \rightarrow ii, d \rightarrow i \newline$This corresponds to Option 4.