Animals active at dawn are

Options

A. Auroral
B. Vesperal
C. Crepuscular
D. Diurnal.

Answer

To determine which animals are active at dawn, we need to analyze the provided options step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the term that describes animals that are active at dawn.

2. **Analyzing the Options**:
- **Auroral**: This term refers to animals that are active during dawn or the early hours of the day. Examples include certain birds like the bubulcus.
- **Vesperal**: This term describes animals that are active at dusk or in the evening. An example would be rabbits.
- **Crepuscular**: This term refers to animals that are active during twilight hours, which includes both dawn and dusk. An example is the lion.
- **Diurnal**: This term describes animals that are primarily active during the daytime. Most birds and mammals fall into this category.

3. **Identifying the Correct Answer**: Since the question specifically asks for animals active at dawn, we need to focus on the term that directly relates to dawn activity. The term "auroral" fits this description perfectly.

4. **Conclusion**: Therefore, the correct answer to the question "Animals active at dawn are" is **auroral**.

### Final Answer:
**Auroral** (Option 1)

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