Colleen replicates an X-ray machine by covering an open shoebox with a screen and positioning a square cardboard piece in the center. She uses sand to simulate X-ray radiation, sprinkling it over the screen. Upon removing the screen, she observes an outline of the square cardboard. What does the cardboard symbolize in her simulation?(1 point)%0D%0AResponses%0D%0A%0D%0Athe person being scanned with X-rays%0D%0Athe person being scanned with X-rays%0D%0A%0D%0Athe bones that look white in an X-ray%0D%0Athe bones that look white in an X-ray%0D%0A%0D%0Athe areas that remain black on the X-ray%0D%0Athe areas that remain black on the X-ray%0D%0A%0D%0Athe veins that look white in an X-ray%0D%0Athe veins that look white in an X-ray
