Final answer:
Neutrophils, by dying at the site of infection and releasing toxic granules option (C), contribute significantly to the release of substances like lysozyme and defensins, which aid in breaking down pathogens and result in the visible signs of acute inflammation.
Step-by-step explanation:
Neutrophils are phagocytic leukocytes that respond quickly to an infection site and play a crucial role in the innate immune system. These cells are known for engulfing and digesting pathogens, thus preventing infections. However, one major reason why neutrophils die at the site of infections is the release of toxic granules option (C). Their granules contain lysozyme, hydrogen peroxide, and defensins which are responsible for breaking down bacterial cell walls and destroying the pathogens. When neutrophils die, they release these substances, which can lead to the accumulation of pus and contribute to the visible signs of acute inflammation. It also acts as a signal to recruit more phagocytes, like macrophages, to clean up the cellular debris.