Balanoglossus is commonly known as
(a) Sand worm
(b) Acorn worm
(c) Blood worm
(d) Rag worm

Options

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

Answer

To solve the question about the common name of Balanoglossus, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**: Understand that Balanoglossus is a type of organism. It is important to know what kind of organism it is to determine its common name.

2. **Research the Characteristics**: Balanoglossus is known to be an ocean-dwelling worm. It is part of the phylum Hemichordata.

3. **Common Name Association**: Look for the common name associated with Balanoglossus. It is often referred to as the acorn worm due to its shape and habitat.

4. **Evaluate the Options**: Review the provided options:
- (a) Sand worm
- (b) Acorn worm
- (c) Blood worm
- (d) Rag worm

5. **Select the Correct Option**: Based on the information gathered, the correct common name for Balanoglossus is (b) Acorn worm.

### Final Answer:
The common name of Balanoglossus is (b) Acorn worm.

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