Assertion(A): Sulphur dioxide, carbon-monoxide, lead, mercury are pollutants.
Reasoning(R): They are the substances released into the environment due to natural or human activity which affects adversely the environment. Choose the correct answer

Options

A. A is correct and R is the correct explanation of A.
B. A is correct and R is not the correct explanation of A.
C. A is correct and R is wrong.
D. A is wrong and R is correct.

Answer

To solve the question regarding the assertion and reasoning about pollutants, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Assertion (A)**:
- The assertion states that "Sulphur dioxide, carbon monoxide, lead, and mercury are pollutants."
- **Analysis**: This statement is true. All of these substances are known pollutants that can harm the environment and human health.

2. **Understand the Reasoning (R)**:
- The reasoning states that "They are the substances released into the environment due to natural or human activity which affects adversely the environment."
- **Analysis**: This statement is also true. These pollutants are indeed released through various activities, both natural (like volcanic eruptions) and human-induced (like industrial emissions), and they negatively impact the environment.

3. **Determine the Relationship**:
- Since both the assertion and reasoning are correct, we need to check if the reasoning provides a correct explanation of the assertion.
- **Analysis**: The reasoning explains why the substances mentioned in the assertion are considered pollutants, thus it is a correct explanation.

4. **Choose the Correct Answer**:
- Based on the analysis, the correct answer would be:
- Assertion is correct and Reason is the correct explanation of Assertion.

### Final Answer:
- The correct option is: **Assertion is correct and Reason is the correct explanation of Assertion.**

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