Echidna is

Options

A. A mammal which is a native of Africa
B. A mammal which is a native of Australia
C. A reptile which is a native of South America
D. A reptile which is a native of Asia

Answer

**Step-by-Step Solution:**

1. **Identify the Classification of Echidna**: Echidna is classified as a mammal. Specifically, it belongs to the group of egg-laying mammals known as Prototheria.

2. **Understand the Characteristics of Prototheria**: Prototheria includes mammals that lay eggs instead of giving live birth. The two main representatives of this group are the echidna and the platypus.

3. **Geographical Distribution**: Echidnas are primarily found in Australia. They are well-adapted to the Australian environment, which is not tropical but temperate, making it suitable for their survival.

4. **Habitat Preference**: Echidnas prefer cooler climates, which aligns with their native habitat in Australia. This characteristic distinguishes them from other mammals that may thrive in warmer climates.

5. **Conclusion**: Based on the classification and characteristics discussed, we can conclude that the echidna is an egg-laying mammal found in Australia, making it a unique member of the mammalian class.

**Final Answer**: Echidna is an egg-laying mammal found in Australia, classified under Prototheria.

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