The group of cranial nerves which are associated with the movement of eye ball are:

Options

A. I,II,VIII
B. III,IV,VI
C. VII,IX,XII
D. III,IV,VII

Answer

To determine the group of cranial nerves associated with the movement of the eyeball, we can analyze the options provided:

1. **Identify the cranial nerves involved in eye movement**:
- The cranial nerves that control eye movement are:
- **Oculomotor nerve (Cranial Nerve III)**: Responsible for most eye movements, including the movement of the eyelid and pupil constriction.
- **Trochlear nerve (Cranial Nerve IV)**: Controls the superior oblique muscle, which helps in rotating the eye.
- **Abducens nerve (Cranial Nerve VI)**: Controls the lateral rectus muscle, which is responsible for moving the eye laterally.

2. **Evaluate the options**:
- **Option 1: 1, 2, and 8** (Olfactory, Optic, and Vestibulocochlear): This option is incorrect as the olfactory and optic nerves are not involved in eye movement.
- **Option 2: 3rd and 6th** (Oculomotor and Abducens): This option is partially correct but misses the trochlear nerve (Cranial Nerve IV).
- **Option 3: 7th, 9th, and 12th** (Facial, Glossopharyngeal, and Hypoglossal): This option is incorrect as these nerves are not involved in eye movement.
- **Option 4: 3rd, 4th, and 7th** (Oculomotor, Trochlear, and Facial): This option is incorrect because the facial nerve is not involved in eye movement.

3. **Conclusion**:
- The correct group of cranial nerves associated with the movement of the eyeball is **Cranial Nerves III (Oculomotor), IV (Trochlear), and VI (Abducens)**. Therefore, the most accurate option would be one that includes all three of these nerves, which is not explicitly listed in the options provided.

### Final Answer:
The group of cranial nerves associated with the movement of the eyeball are the Oculomotor (III), Trochlear (IV), and Abducens (VI) nerves.