Which structure would create currents when the sponge is feeding?

The structure that creates currents in a sponge during feeding is the choanocytes, or collar cells. These specialized cells have flagella that beat to generate water flow through the sponge's body, drawing in water laden with food particles. The collar of microvilli around the flagella helps trap and filter these particles, allowing the sponge to feed efficiently. This flow of water is essential for both feeding and respiration in sponges.