Assertion : Oceans act as the global "sink" for `CO_(2)` .
Reason : Human activites are increasing `CO_(2)` concentration in the air.

Options

A. If both Assertion and Reason are true and the Reason is the correct explanation for the Assertion.
B. If both Assertion and Reason are true and the Reason is not the corret explanation of the Assertion .
C. If Assertion is true the Reason is false .
D. If both Assertion and Reason are false .

Answer

To analyze the assertion and reason provided in the question, we can break it down into a step-by-step solution.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Oceans act as the global 'sink' for CO₂." This means that oceans absorb and store a significant amount of carbon dioxide from the atmosphere, helping to regulate its concentration.

2. **Understanding the Reason**:
- The reason states that "Human activities are increasing CO₂ concentration in the air." This refers to the fact that activities such as burning fossil fuels, deforestation, and industrial processes release large amounts of CO₂ into the atmosphere, leading to higher concentrations.

3. **Evaluating the Assertion**:
- Scientific data shows that approximately 71% of the carbon dioxide in the atmosphere is absorbed by the oceans. This absorption helps mitigate the effects of increased CO₂ levels in the atmosphere, confirming that oceans do act as a global sink for CO₂.

4. **Evaluating the Reason**:
- It is well-documented that human activities, particularly the burning of fossil fuels, contribute significantly to the rise in atmospheric CO₂ levels. This is a true statement and is supported by climate science.

5. **Determining the Relationship**:
- While both the assertion and the reason are true, the reason does not directly explain why oceans act as a sink for CO₂. The assertion focuses on the role of oceans in carbon cycling, while the reason addresses the source of increased CO₂. Thus, the reason is not the correct explanation for the assertion.

6. **Conclusion**:
- Both the assertion and the reason are true statements, but the reason is not the correct explanation for the assertion. Therefore, the correct answer is that both statements are true, but the reason is not the correct explanation for the assertion.

### Final Answer:
- Both the assertion and the reason are true, but the reason is not the correct explanation for the assertion.

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