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 is responsible for housing vital sensory organs, including the eyes and antennae, as well as the mouthparts used for feeding. The thorax is the section that supports the limbs, which are used for movement, and often wings if present, allowing for flight in many species. The abdomen contains the digestive and reproductive organs and is also where many insects store energy-rich substances.

Understanding these segments is fundamental to entomology and pest management, as each part plays distinct roles in an insect's biology and behavior. Recognizing the structures of insects is crucial for identifying pest species and implementing effective control measures. The other choices do not represent the standard anatomical division and include parts that are not main body sections, making them less relevant in this context.