**Core Concept**
The question tests the understanding of extraocular muscles and their innervations, specifically the nerves responsible for eye movements. The **abducens nerve (CN VI)**, **trochlear nerve (CN IV)**, and **oculomotor nerve (CN III)** are key players in controlling eye movements.

**Why the Correct Answer is Right**
To look laterally and downward, the **lateral rectus** and **superior oblique** muscles are involved. The **abducens nerve (CN VI)** innervates the lateral rectus, which abducts the eye, while the **trochlear nerve (CN IV)** innervates the superior oblique, which rotates the eye downward.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not specified.
**Option B:** Incorrect because it is not specified.
**Option D:** Incorrect because it is not specified.

**Clinical Pearl / High-Yield Fact**
Remember that the **oculomotor nerve (CN III)** controls most of the extraocular muscles except for the superior oblique and lateral rectus, which are controlled by the **trochlear nerve (CN IV)** and **abducens nerve (CN VI)**, respectively.

**Correct Answer:** D. Trochlear nerve (CN IV) and Abducens nerve (CN VI) are involved but since the question is about looking laterally and downward the best fit is the nerve that has a primary role in this movement which is the **Abducens nerve (CN VI)** for lateral movement and the question lacks the specific nerve name in the options provided.