A liquid seeks its own _______.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Concept**: The phrase "A liquid seeks its own _______" refers to the behavior of liquids when they are placed in a container.

2. **Behavior of Liquids**: When a liquid is poured into a container, it will adjust itself to fill the container completely. This means that the surface of the liquid will always be flat and at the same height, regardless of the shape of the container.

3. **Defining the Term**: The term that best completes the phrase is "level." This is because a liquid will always find its own level due to the force of gravity acting on it.

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