Final answer:
If milk spots are noted on a pig's liver during a necropsy, it most likely was infected with Taenia solium, also known as the pork tapeworm.
Step-by-step explanation:
If milk spots are noted on a pig's liver during a necropsy, it most likely was infected with Taenia solium, also known as the pork tapeworm. Taenia solium is a tapeworm that is transmitted through the ingestion of undercooked pork. The tapeworm eggs hatch in the small intestine, where the larvae invade the intestinal wall and travel through the circulatory system. They can form cysts in internal organs, including the liver.