question: Sponges exemplify what type of arrangement, where different cells are specialized for different functions, but each cell works alone?
distractor3: organ-level organization
distractor1: independent organization
distractor2: commensalism
correct_answer: cell-level organization
support: Sponges have cell-level organization, in which different cells are specialized for different functions, but each cell works alone. For example, some cells digest food, while other cells let water pass through the sponge.