Ink is a heterogeneous mixture.

Answer

**Step-by-Step Solution:**

1. **Understanding the Definition of a Heterogeneous Mixture:**
- A heterogeneous mixture is defined as a mixture in which the composition is not uniform throughout. This means that you can see distinct parts or phases within the mixture.

2. **Identifying the Characteristics of Ink:**
- Ink is a liquid that is used for writing or printing. When you look at ink, it appears as a single, uniform color without any visible separation of components.

3. **Analyzing the Composition of Ink:**
- In the case of ink, the components (such as dyes, solvents, and additives) are mixed in such a way that they do not form distinct layers or phases. Instead, they blend together to create a uniform solution.

4. **Conclusion:**
- Since ink does not have distinct phases and its composition is uniform throughout, it is classified as a homogeneous mixture, not a heterogeneous mixture.

5. **Final Statement:**
- Therefore, the statement "Ink is a heterogeneous mixture" is incorrect. Ink is a homogeneous mixture.

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