The limbless amphibian is

Options

A. Ichthyophis
B. Hyla
C. Rana
D. Salamandra

Explanation

To determine the limbless amphibian from the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Classification of Amphibians**:
- Amphibians are a class of animals that can live both in water and on land. Common examples include frogs, toads, and salamanders.

2. **Analyze the Given Options**:
- The options provided are Ichthyophis, Hyla, Rana, and Salamandra.
- Hyla, Rana, and Salamandra are all types of frogs, which are characterized by having limbs.

3. **Identify the Limbless Amphibian**:
- Among the options, Ichthyophis is known to be a type of caecilian, which is a group of limbless amphibians.
- Caecilians are elongated, burrowing amphibians that lack limbs, resembling snakes.

4. **Conclude the Answer**:
- Since Ichthyophis is the only option that is a limbless amphibian, the correct answer is Ichthyophis.

### Final Answer:
The limbless amphibian is **Ichthyophis**.

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