Which question could BEST help understand why the shape of water changes when it turns from a solid to a liquid? A. How can the arrangement of the particles be described? B. Which model has the most water molecules? C. Which model has the largest water molecules? D. How can the color of the particles be described? C 2025 Renaissance Learning InC. All rights reserved.

## Step 1<br />The problem is asking us to identify the question that would best help us understand why the shape of water changes when it turns from a solid to a liquid. This is a question about the physical properties of water and the changes it undergoes during phase transitions.<br /><br />## Step 2<br />The key to understanding this is to consider the arrangement of the particles in the water. In a solid state, water molecules are tightly packed in a fixed arrangement, which gives it a definite shape. When water turns into a liquid, the molecules begin to move more freely and spread out, which allows the water to take the shape of its container.<br /><br />## Step 3<br />Looking at the options, option A, "How can the arrangement of the particles be described?", is the most relevant to understanding this change. The other options, such as the size or color of the particles, or the number of water molecules, do not directly address the change in shape that occurs when water transitions from a solid to a liquid.