Which characteristic is typical of flies?

Flies are known for having sponging mouthparts, which enable them to absorb liquids efficiently. This unique mouthpart structure allows them to feed on various substances, including decaying organic matter, nectar, and other liquids. The sponging mechanism works by soaking up the liquid food, making it easy for flies to consume their nutrition through their specialized mouthparts.

The other options represent characteristics that do not typically apply to flies. While some insects may exhibit large body sizes or colorful patterns, these traits are not defining features of flies. Additionally, flies lack stingers—this trait is more commonly associated with certain other insects like bees or wasps, which use stingers as a defense mechanism. Understanding the unique features of flies, especially their feeding adaptations, is key to identifying them and understanding their role in ecosystems.