The weather in Shimen makes the wall or wall skin very wet, belonging to

A. When cooking, "white gas" comes out of the pot, and the water vapor in the air condenses into small water droplets, which changes from gas to liquid. This is a liquefaction phenomenon.

B, the water on the ground turns into ice in winter, which is a solidification phenomenon.

C. The water spilled on the ground is dry and belongs to vaporization.

D, camphor tablets in the wardrobe become smaller, which is a sublimation phenomenon.

So choose a.