The most common earthworm of India is

Options

A. Pheretima communissima
B. Eutyphacus
C. Pheretima posthuma
D. Lumbricus

Answer

### Step-by-Step Solution:

1. **Identify the Subject**: The question asks for the most common earthworm found in India. This indicates that we need to focus on earthworm species that are prevalent in the Indian subcontinent.

2. **Understand Earthworm Classification**: Earthworms belong to the phylum Annelida and are classified under the class Oligochaeta. This classification helps narrow down the options provided in the question.

3. **Review the Options**: The options given are:
- Ferritima communisima
- Eutrophicus
- Ferritima posthuma
- Lumbricus

4. **Research Common Earthworms in India**: Among the options, we need to identify which of these earthworms is most commonly found in India.

5. **Identify the Correct Answer**: After reviewing the options and considering the common species, it is established that **Ferritima posthuma** is the most common earthworm in India.

6. **Conclusion**: Therefore, the answer to the question is **Ferritima posthuma**.

### Final Answer:
The most common earthworm of India is **Ferritima posthuma**.

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