the wire guaze is less dense than water
the water molecules repels the wire guaze upwards
the water surface has the effect of an elastic thin skin
of the cohensive forces between the water and the wire guaze molecules
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there is a difference between to lay on water and to float on it. that is the confusing thing here, lay has to do with the surface tension of the liquid while floating has to do with the bouyant force of the liquid.
The reason a piece of wire gauze can be made to lie on water is that the water surface has the effect of an elastic thin skin. This effect is due to the cohesive forces between the water molecules that cause them to stick together and form a surface tension. The wire gauze is able to rest on the water surface because it is not heavy enough to break the surface tension, allowing it to be supported by the surface of the water. Therefore, the correct option is "the water surface has the effect of an elastic thin skin".
