Changes involve

Options

A. an action
B. a reaction
C. interactions
D. none of these

Answer

**Step-by-Step Solution:**

1. **Understanding Changes:**
- Changes occur all around us and can be observed in various forms. These changes can be physical or chemical in nature.

2. **Identifying Interaction:**
- Almost all changes involve some form of interaction between two or more materials. This means that when a change happens, it often requires the involvement of different substances or objects that influence each other.

3. **Example of Water:**
- A clear example of this interaction is the behavior of water.
- When heat energy is added to water, it absorbs this energy and changes from liquid to gas, forming steam. This is a physical change due to the interaction of water with heat.

4. **Reverse Process:**
- Conversely, if heat energy is removed from water, it loses energy and can change from liquid to solid, forming ice. This again illustrates the interaction between water and energy.

5. **Conclusion:**
- Based on the examples and explanations, we conclude that changes around us primarily involve interaction between materials. Therefore, the correct answer to the question "Changes involve" is "interaction."

**Final Answer:**
Changes involve interaction.

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