This puzzle asks you to find the single category linking five clues: Cardboard, Leaves, Banana peels, Eggshells and egg cartons, and Grass clippings and twigs. The answer is Things that are composted. Each clue is a concrete example of a broader collection. The answer is the set label that every row belongs to without stretching the meaning. With only "Cardboard", many categories could fit. Hold your first guess and watch what clue 2 eliminates. "Cardboard" and "Leaves" must share one repeatable link — not a coincidence between two words. By clue 3 ("Banana peels"), "Things that are composted" should explain all three without bending meanings. "Eggshells and egg cartons" strengthens "Things that are composted" rather than opening a new theory. The final clue ("Grass clippings and twigs") confirms "Things that are composted" — if it still fits naturally, the category is locked. Use the Solution tab above for an interactive clue-by-clue walkthrough, or the Solved board tab for the complete answer at a glance.