Final answer:
The components of Echinococcus granulosus are formed through the ingestion of eggs, which hatch into larvae that penetrate the intestine and form cysts in the host's organs.
Step-by-step explanation:
The life cycle of Echinococcus granulosus, involves the ingestion of eggs. Once ingested by a suitable host, typically a carnivore such as a dog, the eggs hatch in the small intestine, releasing larvae. The larvae penetrate the intestinal wall, enter the bloodstream, and are then able to form hydatid cysts in internal organs like the lungs and liver. The cysts, which contain the parasitic larvae, grow slowly and may go unnoticed until they become large. Should these cysts rupture, they can cause severe allergic reactions, even anaphylaxis. Therefore, the correct answer to how the components of Echinococcus granulosus are formed is B. Ingestion of eggs.