The organic matter of soil has the value

Options

A. `25%`
B. `50%`
C. `40%`
D. `5%`

Answer

To solve the question regarding the percentage of organic matter in the soil, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the percentage of organic matter present in the soil. We need to identify the correct percentage from the given options: 25%, 50%, 40%, or 5%.

2. **Identify Sources of Organic Matter**: Organic matter in the soil primarily comes from the decomposition of plant and animal residues. This includes the remains of dead plants and animals, as well as their waste products.

3. **Consider the Decomposition Process**: The organic matter is formed at various stages of decomposition. As plant and animal tissues break down, they contribute to the organic content of the soil.

4. **Know the Typical Percentage Range**: The organic matter content in soil typically ranges from 4% to 6%. This range is important for determining the correct answer.

5. **Evaluate the Options**: Among the options provided:
- 25% is too high.
- 50% is also too high.
- 40% is still above the typical range.
- 5% is within the range of 4% to 6%.

6. **Select the Correct Answer**: Based on the evaluation, the percentage of organic matter in the soil is closest to 5%. Therefore, the correct answer is option D: 5%.

### Final Answer:
The organic matter of soil has the value of approximately **5%**.

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