Which statement about fleas is identified as true in the material?

• A. Notoedres species
• B. Melophagus species
• C. Ancylostoma species
• D. Echinococcus species

Answer: (B)

The main point here is recognizing which parasite the material calls a flea. In the material, Melophagus species are identified as the flea. Melophagus ovinus, the sheep ked, is a blood-feeding ectoparasite associated with animals and often discussed in the same context as other fleas because of its parasitic lifestyle on the host, even though it is technically a louse fly rather than a true flea. The other organisms listed are not fleas: Notoedres species are mites that cause mange, Ancylostoma species are hookworms, and Echinococcus species are tapeworms. So the statement about Melophagus species being the flea described in the material is the one that matches.