Keelee is including the following paragraph in her blog post on the school’s website: Last week, as part of Science Week, our class proved that, contrary to most people’s expectations, boiling water freezes faster than cooler water. We placed three eight-ounce containers—one filled with cold water, one filled with room-temperature water, and one filled with boiling water—in the staff-room freezer and checked on them periodically. The container with the boiling water froze first! Which one of the following items should Keelee choose to aid readers’ comprehension of the paragraph? A. a video showing a container being filled with water B. a photo of students holding up a Science Week banner C. an audio file that plays the sound of a boiling kettle whistling D. a line graph showing the time it took each container of water to freeze