Passage Summary: Steel gets smaller when you press on it, but glass just moves around like a very slow liquid. If you put a heavy weight in the middle of a glass sheet, the glass will move from under the weight toward the edges.

Reasoning: Glass is a fluid that maintains its volume under pressure but flows from areas of high pressure to areas of low pressure.

Analysis: This question requires a strict application of the physical principles provided in the premises. Since the glass is under 'sustained pressure' in the middle and 'less pressure' at the edges, the rule dictates the glass must flow toward those edges. Because the volume remains unchanged, the glass cannot simply disappear or compress; it must redistribute. Therefore, we should expect the final statement to describe the glass becoming thinner in the center and thicker toward the perimeter.