Choose the Venn diagram which best illustrates the three given classes:
Oxygen, Atmosphere , Air

Options

A.
B.
C.
D.

Answer

To solve the problem of choosing the appropriate Venn diagram that illustrates the classes: Oxygen, Atmosphere, and Air, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Classes**:
- We have three classes to consider: Oxygen, Atmosphere, and Air.

2. **Understand the Relationships**:
- Oxygen is a component of Air.
- Air exists within the Atmosphere.
- Therefore, we can visualize the relationships as follows:
- Atmosphere contains Air.
- Air contains Oxygen.

3. **Visualize the Venn Diagram**:
- We need to find a Venn diagram that shows:
- A larger circle representing the Atmosphere.
- A smaller circle inside it representing Air.
- An even smaller circle inside the Air circle representing Oxygen.

4. **Evaluate the Options**:
- Look at the provided Venn diagram options and find one that matches the relationships identified.
- The correct diagram should have:
- A large circle for Atmosphere.
- A medium circle for Air inside the Atmosphere circle.
- A small circle for Oxygen inside the Air circle.

5. **Select the Correct Diagram**:
- Based on the relationships and the visual representation, the first option (A) is the one that satisfies all the conditions:
- Oxygen is inside Air, and Air is inside Atmosphere.

### Conclusion:
The correct Venn diagram that illustrates the classes Oxygen, Atmosphere, and Air is option A.

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