Which one of the following statements about standard foam is true?


A. Once a foam brick is soaked, no additional water can be added to the container.
B. A foam brick can't stand any higher than its container.
C. The water it holds doesn't evaporate normally.
D. The water it holds evaporates normally.

D. The water it holds evaporates normally.

The correct statement about standard foam is:

D. The water it holds evaporates normally.

To determine which one of the statements about standard foam is true, we can analyze each statement individually.

A. "Once a foam brick is soaked, no additional water can be added to the container."
To determine the accuracy of this statement, we need to understand the properties of standard foam. Standard foam, also known as floral foam, is a porous material designed to hold and release water for the purpose of keeping flowers or other materials hydrated. The foam has a network of cells that can absorb water. Therefore, it is not accurate to say that no additional water can be added to the container once a foam brick is soaked. Additional water can be added, and the foam will absorb it as long as there is space in the cells.

B. "A foam brick can't stand any higher than its container."
This statement refers to the height at which a foam brick can be placed in a container. However, the height limitation is not a characteristic of the foam itself but rather the physical size of the container. The foam can be cut or trimmed to fit the desired size of the container. Therefore, it is not accurate to say that a foam brick can't stand any higher than its container.

C. "The water it holds doesn't evaporate normally."
This statement relates to the evaporation of water held in the foam. When water is absorbed by the foam, it is stored within the cells. Over time, the water in the foam will gradually evaporate into the surrounding air. Therefore, it is not accurate to say that the water held in standard foam doesn't evaporate normally.

D. "The water it holds evaporates normally."
This statement correctly describes the behavior of water held in standard foam. The water held in the foam will evaporate normally, meaning it will gradually evaporate over time when exposed to the surrounding air.

Based on the analysis above, we can conclude that statement D, "The water it holds evaporates normally," is true.