**Core Concept**
The question tests the student's knowledge of cranial nerves and their functions, specifically focusing on somatic efferent fibers which are responsible for transmitting motor signals from the central nervous system to skeletal muscles.

**Why the Correct Answer is Right**
Since the correct answer options are missing, let's discuss the general concept: cranial nerves III, IV, VI, and XII contain somatic efferent fibers as they control eye movements and tongue movements. The absence of specific options makes it challenging to pinpoint the exact correct answer, but typically, cranial nerves like VII (facial), IX (glossopharyngeal), and X (vagus) primarily contain special visceral efferents or parasympathetic fibers rather than somatic efferents.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific option, it's hard to determine, but if it were a nerve like III or IV, it would be incorrect because they do contain somatic efferents for eye movement.
**Option B:** Similarly, without specifics, if it's a nerve known for somatic efferent function, it would be an incorrect choice.
**Option C:** If this option were a cranial nerve known for its role in controlling skeletal muscles, it would not be the correct answer.
**Option D:** Assuming this might be a nerve with primarily special visceral efferents or no somatic efferent function, it could potentially be the correct answer based on the exception in the question.

**Clinical Pearl / High-Yield Fact**
Remembering that cranial nerves III, IV, and VI are involved in eye movements and contain somatic efferents, while cranial nerve XII controls the tongue, is crucial. Special visceral efferents are typically involved in muscles of branchial arch origin.

**Correct Answer:** Correct Answer: D. Cranial nerve II