A caterpillar encases itself in a ________ and changes into a butterfly.

Options

A. Chrysalis
B. Caterpillar
C. Larvae
D. Both (b) and (c )

Answer

To answer the question, "A caterpillar encases itself in a ________ and changes into a butterfly," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Life Cycle of a Butterfly**:
- The life cycle of a butterfly includes several stages: egg, larva (caterpillar), pupa (chrysalis), and adult butterfly.

2. **Identifying the Relevant Stage**:
- The question specifically asks about the stage where the caterpillar encases itself. This is a crucial part of the transformation process.

3. **Recognizing the Correct Term**:
- The term for the stage when a caterpillar encases itself is known as the "chrysalis" stage. During this stage, the caterpillar undergoes metamorphosis to become a butterfly.

4. **Conclusion**:
- Therefore, the correct answer to fill in the blank is "chrysalis."

### Final Answer:
A caterpillar encases itself in a **chrysalis** and changes into a butterfly.

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