If a starfish possess 6 arms instead of 5, it is an example of :

Options

A. Variation
B. Metamorphosis
C. Biogenesis
D. Evolution

Answer

To solve the question, "If a starfish possesses 6 arms instead of 5, it is an example of:", we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding the Normal Condition**:
- A typical starfish has five arms. This is the standard or expected morphology for this organism.

2. **Identifying the Variation**:
- The question states that a starfish has six arms instead of the usual five. This indicates a deviation from the normal morphology.

3. **Defining Variation**:
- Variation refers to differences that occur within a species. These differences can arise due to genetic factors (like mutations) or environmental influences.

4. **Evaluating the Options**:
- **Variation**: This option fits because the starfish shows a difference in arm number compared to the norm.
- **Metamorphosis**: This refers to a developmental process where an organism undergoes significant changes in form. This is not applicable here.
- **Biogenesis**: This term relates to the origin of life or the formation of new biological entities, which is not relevant to the arm count of a starfish.
- **Evolution**: While evolution involves changes over time in a population, it does not specifically address the individual variation seen in this case.

5. **Conclusion**:
- Since the starfish's condition of having six arms is a specific instance of variation from the normal five arms, the correct answer is **variation**.

### Final Answer:
The correct answer is **variation**.