Final answer:
Brittle stars eat by using their long, thin, and flexible arms to capture and bring food to their mouth located on their central disk. They primarily feed on detritus and small organisms, such as plankton and small crustaceans. The arms of brittle stars are lined with tube feet, which they use to grasp and manipulate their food.
Step-by-step explanation:
Brittle stars eat by using their long, thin, and flexible arms to capture and bring food to their mouth located on their central disk. They are primarily scavengers and feed on detritus and small organisms, such as plankton and small crustaceans. The arms of brittle stars are lined with tube feet, which they use to grasp and manipulate their food. Once the food is brought to the mouth, it is engulfed and further digested in the stomach located in the central disk.