Which examples are insects?

• A. Fleas, lice and maggots
• B. Mites and ticks
• C. Maggots only
• D. Fleas and ticks

Answer: (A)

Insects are six‑legged arthropods. Fleas and lice are true insects, both common ectoparasites of animals. Maggots are the larval stage of flies, and even though they lack many adult features, they are still part of the insect lineage because they are insect larvae. Mites and ticks, on the other hand, are arachnids, not insects, and they have eight legs and a different body structure. So the group that includes all true insects here is fleas, lice, and maggots. The other options either include a non-insect (ticks) or exclude an insect (failing to include one or both fleas and lice).