The largest lizard is

Options

A. Chameleon
B. Heloderma
C. Ophiosaurus
D. Varanus

Answer

**Step-by-Step Solution:**

1. **Understanding the Classification**: Lizards belong to the class Reptilia, which includes various cold-blooded animals. This means they are classified as poikilotherms.

2. **Identifying Characteristics**: Lizards have internal fertilization and are generally oviparous, meaning they lay eggs.

3. **Analyzing the Options**:
- **Chameleon**: Known for its ability to change color and is a viviparous reptile, but it is not the largest lizard.
- **Heloderma**: This is the only poisonous lizard in the world, but it is not the largest.
- **Ophiosaurus**: This is a limbless lizard, but again, it does not hold the title of the largest lizard.
- **Varanus**: Commonly known as the monitor lizard, it is recognized as the largest living lizard.

4. **Conclusion**: After evaluating all the options, the largest lizard is identified as **Varanus**.

**Final Answer**: The largest lizard is Varanus.

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