Balanoglossus is commonly known as

Options

A. Sand worm
B. Acom worm
C. Blood worm
D. Rag worm

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about "Balanoglossus," which is a genus of marine organisms.

2. **Classify the Organism**: Balanoglossus belongs to the phylum Hemichordata. This classification is important as it helps us understand the biological context of the organism.

3. **Common Names**: Balanoglossus is commonly known by several names, including sandworm, acornworm, bloodworm, and ragworm.

4. **Focus on the Most Recognized Name**: Among these names, "acornworm" is the most recognized and widely used common name for Balanoglossus, primarily due to its distinctive acorn-shaped anterior end.

5. **Conclusion**: Therefore, the answer to the question is that Balanoglossus is commonly known as the acornworm.

**Final Answer**: Balanoglossus is commonly known as the acornworm.

---