The animals belonging to which class of vertebrates generally lead an arboreal life?

Options

A. Aves
B. Reptiles
C. Mammals
D. All of these

Answer

### Step-by-Step Solution:

1. **Understanding Arboreal Life**:
- Arboreal life refers to animals that primarily live in trees. These animals are adapted to life in the branches and foliage of trees.

2. **Identifying Classes of Vertebrates**:
- Vertebrates are divided into several classes, including Aves (birds), Reptiles, Amphibians, Fish, and Mammals.

3. **Evaluating Aves (Birds)**:
- While many birds can fly and are often found in trees, they are not exclusively arboreal. Birds can inhabit various environments, including open fields and water bodies.

4. **Evaluating Reptiles**:
- Reptiles, such as snakes and lizards, are primarily terrestrial or aquatic. They do not typically lead an arboreal lifestyle.

5. **Evaluating Mammals**:
- Many mammals, particularly primates like monkeys and apes, are well adapted to an arboreal lifestyle. They live in trees, use branches for movement, and build their nests or homes in the canopy.

6. **Conclusion**:
- Based on the evaluation, the class of vertebrates that generally leads an arboreal life is **Mammals**.

### Final Answer:
The animals belonging to the class **Mammals** generally lead an arboreal life.

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