Answer:
The answer to the question "When you overfill a glass of water, the layer of water may rise above the sides of the glass and hold its shape. This is due to" is "A. Surface tension."
Step-by-step explanation:
Surface tension is defined as the tendency of the surface of a liquid to minimize its surface area, caused by intermolecular forces, such as hydrogen bonding, between the liquid's molecules. When you overfill a glass of water, the surface tension of the water allows it to remain above the rim of the glass, rather than flowing over the side, until another force acts to break the tension. This phenomenon is also responsible for the shape of water droplets and the ability of certain insects to walk on water.