What are the three main body parts of an insect?

The three main body parts of an insect are the head, thorax, and abdomen. The head contains the sensory organs, such as compound eyes and antennae, as well as the mouthparts for feeding. The thorax is responsible for locomotion and typically has three pairs of legs and, in many species, one or two pairs of wings. Lastly, the abdomen houses vital organs related to digestion and reproduction. This tripartite body structure is a defining characteristic of insects and is essential for their functionality and survival.

While other combinations mentioned in the options touch upon parts of the insect body, they do not encompass the full organization as outlined in standard entomology. For instance, wings and legs are appendages attached to the thorax, but they do not represent the three main divisions of the insect body.