Presence of obturator foramen feature of `:-`

Options

A. Frog
B. Cockroch
C. Rabbit
D. None

Answer

To determine the presence of the obturator foramen, we need to analyze the options provided: frog, cockroach, rabbit, and nun.

### Step-by-Step Solution:

1. **Understand the Obturator Foramen**:
- The obturator foramen is a large hole located in the hip bone, specifically between the pubis and ischium. It is a significant anatomical feature in certain vertebrates.

2. **Analyze the Options**:
- **Frog**: Frogs are amphibians and do not possess a true obturator foramen as seen in mammals. Their skeletal structure is different.
- **Cockroach**: Cockroaches are insects and do not have a hip bone structure like vertebrates; hence, they do not have an obturator foramen.
- **Rabbit**: Rabbits are mammals and possess a well-developed hip bone structure that includes an obturator foramen.
- **Nun**: This option seems to be a typographical error or irrelevant in this context.

3. **Conclusion**:
- The only organism from the given options that has an obturator foramen is the rabbit. Therefore, the correct answer is **option number three: rabbit**.

### Final Answer:
The presence of the obturator foramen is a feature of **rabbit**.

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