Final answer:
Phagocytes initiate the healing process by secreting substances that promote the inflammatory response and phagocytosis of pathogens, leading to the resolution of inflammation and tissue repair.
Step-by-step explanation:
Phagocytes play a crucial role in the healing process by secreting substances that initiate the healing response. During the inflammatory response, phagocytes like neutrophils and macrophages are attracted to the site of injury or infection. Neutrophils are among the first responders that phagocytize pathogens. They engulf and digest pathogens while releasing histamines that promote inflammation. Following neutrophils, macrophages arrive to take over the role of phagocytosis and are integral to the resolution of the inflamed site by cleaning up cell debris and pathogens.These phagocytes release cytokines and other chemicals that help regulate the immune response, including signaling to other immune cells to come to the area, and facilitating the overall healing process. Therefore, the correct answer to the question is that phagocytes 'secrete substances that initiate the healing process' (d).