Doris is

Options

A. Sea Lemon
B. Shipworm
C. Sea Hare
D. Pearl Oyster

Answer

### Step-by-Step Solution:

1. **Identify the Organism**: The question asks about Doris, which is an aquatic organism. We need to determine which category it falls under among the given options.

2. **Understand the Classification**: Doris belongs to the phylum Mollusca. Within this phylum, Doris is classified as a marine gastropod.

3. **Recognize the Characteristics**: Doris is characterized by its shell-less body, large size, and often yellow color. It resembles a lemon, which is why it is commonly referred to as "sea lemon."

4. **Evaluate the Options**:
- **Sea Lemon**: This is the common name for Doris, making it a potential correct answer.
- **Shipworm**: This organism is known for boring into wood and is not related to Doris.
- **Sea Hare**: This is another type of gastropod, but it is not the same as Doris.
- **Pearl Oyster**: This organism has two shells and is known for producing pearls, which is unrelated to Doris.

5. **Select the Correct Answer**: Based on the characteristics and classification, the correct answer is "sea lemon," which is the common name for Doris.

### Final Answer:
Doris is an example of **sea lemon**.