Give an example of a plant hormone that promotes growth.

Explanation

**Step-by-Step Solution:**

1. **Understanding Plant Hormones**: Plant hormones, also known as phytohormones, are organic substances produced naturally by plants. They play a crucial role in regulating various physiological processes.

2. **Types of Plant Hormones**: There are several types of plant hormones, including auxins, ethylene, abscisic acid, gibberellins, and cytokinins. Each of these hormones has specific functions in plant growth and development.

3. **Identifying Growth-Promoting Hormones**: Among these hormones, some are specifically known for promoting growth. Auxin is one of the most well-known growth-promoting hormones.

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