Final answer:
Neutrophils are phagocytic cells that play a significant role in the body's immune response by engulfing and digesting pathogens using the toxic substances in their intracellular granules.
Step-by-step explanation:
The true statement regarding Neutrophils is that they are phagocytic cells containing toxic substances in their intracellular granules, making option c correct. Neutrophils are the most abundant leukocytes in the immune system and play a crucial role in the body's innate immune response. These granulocytes rapidly respond to infection, performing phagocytosis to engulf and digest pathogens.
Their cytoplasmic granules contain substances like histamine and enzymes in lysosomes, which are essential for breaking down engulfed pathogens. While neutrophils are predominantly associated with the innate immune system, new research has indicated they may also have a role in the adaptive immune response.