Albendazole is primarily used to treat which of the following?

Albendazole is primarily used to treat helminthic infections, which are caused by parasitic worms. It belongs to the class of anthelmintic agents and works by disrupting the metabolism of the parasites, ultimately leading to their death. This drug is effective against a variety of worms, including roundworms, flatworms, and hookworms.

The mechanism of action involves the inhibition of the polymerization of tubulin, which is crucial for the formation of microtubules. This disruption impairs the parasite's ability to absorb glucose and other nutrients, causing it to die. Albendazole is widely used in treating conditions such as neurocysticercosis and lymphatic filariasis, which are both caused by helminthic infections.

In contrast, the other options are related to different types of pathogens. Bacterial infections require antibiotics for treatment, viral infections are managed with antiviral medications, and fungal infections are targeted with antifungal agents. Thus, the specific action of albendazole on parasitic worms clearly categorizes it as a treatment for helminthic infections.