Which of the following is an example of an anthelmintic drug?

Albendazole is a prime example of an anthelmintic drug. Anthelmintics are specifically designed to eliminate parasitic worms, which are often the cause of infections in humans and animals. Albendazole works by inhibiting the metabolism of glucose in the worms, effectively starving them and leading to their death. It is used to treat a variety of parasitic infections, including those caused by roundworms, hookworms, and some flatworms.

The other options listed do not serve this purpose. For instance, ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) used primarily to relieve pain, reduce inflammation, and lower fever. Amoxicillin is an antibiotic that treats bacterial infections, not parasitic infections. Acetaminophen is an analgesic and antipyretic medication used for pain relief and fever reduction. None of these options have any anthelmintic properties, underscoring why albendazole is the correct choice for this question.