The center of a graphic organizer should include the main idea of a writing piece. In this case, the main idea is "Trip to the Beach" so all of the pieces of the graphic organizer should be things that one would do or bring to the beach.

Of the answer choices provided, the best answer is "Sunscreen, Swimsuit, Towel, Beachball " because they are all items you might bring when going to the beach. A beach is generally warm, so you would not need a coat, gloves, boots, or a sweater.