Which group of arthropods has three body sections, six legs, one pair of antennae, and usually one or two pairs of wings?

• A. Crustaceans
• B. Decomposers
• C. Insects
• D. Arachnids

Answer: (C)

Insects have a three-part body plan: head, thorax, and abdomen. Their six legs are attached to the thorax, and they typically carry one pair of antennae on the head for sensing their environment. Wings, when present, usually attach to the thorax and come in one or two pairs in many species, though some insects are wingless. This combination—three body sections, six legs, one pair of antennae, and often wings—helps distinguish insects from other arthropods like crustaceans (which often have more legs and multiple antennae) and arachnids (which have eight legs and two main body segments). Decomposers isn’t a distinct arthropod group, so it doesn’t define a body plan.