Students are using balloons to describe the expanding universe model. The students blow up several balloons and put them on the floor. Each balloon represents a different galaxy. How should the students move or change the balloons to demonstrate how the universe is expanding? *
A. All of the balloons should be moved to the center of the floor.
B. Each balloon should be inflated more so that they are all increasing in size.
C. Each balloon should be deflated so that there is more distance between the surface of each balloon.
D. All of the balloons should be moved away from each other so there is more distance between them.
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