Pheretima is useful in making -

Options

A. Bait for fishing
B. Soil porous & fertile
C. Laboratory use
D. All

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the uses of Pheretima, which is the scientific name for earthworms.

2. **Identifying the Options**: The options provided are:
- A) Bait for fishing
- B) Making soil porous and fertile
- C) Laboratory use
- D) All of the above

3. **Evaluating Each Option**:
- **Option A**: Earthworms are commonly used as bait in fishing. This is a well-known use, as many anglers use earthworms to attract fish.
- **Option B**: Earthworms play a crucial role in agriculture by aerating the soil and enhancing its fertility through their natural processes of digestion and excretion. This is why they are often referred to as "friends of farmers."
- **Option C**: Earthworms are also used in scientific laboratories for various experiments, including studies on soil health and ecology.

4. **Conclusion**: Since all three options (A, B, and C) are correct, the best answer is D) All of the above.

5. **Final Answer**: Pheretima (earthworms) is useful in making bait for fishing, making soil porous and fertile, and for laboratory use. Therefore, the correct answer is D) All of the above.

---