A connecting/missing link between reptiles and birds is

Options

A. Archaeopteryx
B. Platypus
C. Java
D. Whale

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a connecting or missing link between reptiles and birds. This means we are looking for a species that exhibits characteristics of both groups.

2. **Identifying the Options**: The options provided are:
- Archaeopteryx
- Platypus
- Java
- Well

3. **Analyzing the Options**:
- **Archaeopteryx**: Known as a transitional fossil, it has features of both reptiles (like teeth and a long tail) and birds (like feathers and wings).
- **Platypus**: This is a mammal and does not serve as a link between reptiles and birds.
- **Java**: This does not refer to a species relevant to the question.
- **Well**: This is not a species and does not relate to the evolutionary link.

4. **Selecting the Correct Answer**: Based on the analysis, Archaeopteryx is the only option that fits the criteria of being a connecting link between reptiles and birds.

5. **Conclusion**: Therefore, the correct answer is **Archaeopteryx**.

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