Assertion (A): Decomposers keep the environment clean.
Reason (R): They recycle matter by breaking down the organic remains and waste products of plants and animals.

Options

A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B. Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
C. Assertion is true but Reason is false.
D. Assertion is false and Reason is true.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Assertion (A):**
- The assertion states that "Decomposers keep the environment clean."
- This means that decomposers play a crucial role in removing dead organic matter and waste from the environment.

2. **Understanding the Reason (R):**
- The reason provided is that "They recycle matter by breaking down the organic remains and waste products of plants and animals."
- This indicates that decomposers break down complex organic materials into simpler substances, which can then be reused in the ecosystem.

3. **Analyzing the Assertion:**
- Decomposers, such as bacteria and fungi, break down dead plants and animals, as well as waste products.
- This process of decomposition helps in cleaning the environment by removing waste and dead matter, thus supporting the assertion that they keep the environment clean.

4. **Analyzing the Reason:**
- The process of decomposition involves breaking down complex organic materials into simpler forms, which are then returned to the soil and ecosystem.
- This recycling of matter is essential for nutrient cycling in ecosystems, confirming that the reason is correct.

5. **Conclusion:**
- Both the assertion (A) and the reason (R) are true.
- Furthermore, the reason (R) provides a correct explanation for the assertion (A) because it describes how decomposers maintain cleanliness in the environment through their recycling process.

**Final Answer:**
Both A and R are true, and R is the correct explanation of A.

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