## Core Concept
The zygomatic bone, also known as the cheekbone, plays a crucial role in forming the lateral wall and floor of the orbit, the anterior wall of the maxillary sinus, and the zygomatic arch. A fracture of this bone can lead to various clinical features due to its complex anatomical position.

## Why the Correct Answer is Right
The correct answer can be deduced by understanding the typical clinical features associated with a zygomatic bone fracture. Common features include:
- **Diplopia** (double vision) due to the involvement of the orbital floor and potential entrapment of extraocular muscles.
- **Infraorbital anesthesia** due to the damage to the infraorbital nerve, which runs along the floor of the orbit.
- **Sinking of the malar prominence** (the cheekbone area) leading to a flat appearance of the cheek.
- **Trismus** (difficulty in opening the mouth) due to the interference with the coronoid process of the mandible or the zygomatic arch.

## Why Each Wrong Option is Incorrect
To accurately determine why each wrong option is incorrect, the specific options (A, B, C, D) need to be provided. However, based on common clinical features of zygomatic bone fractures:
- **Option A:** If it describes a known feature such as diplopia, infraorbital anesthesia, or malar prominence sinking, it would not be incorrect.
- **Option B:** Similarly, if it lists trismus or another recognized symptom, it would be a correct association, not an incorrect one.

## Clinical Pearl / High-Yield Fact
A key clinical pearl is that zygomatic bone fractures often require a CT scan for accurate diagnosis and surgical planning. The zygomatic bone's complex structure and its role in facial aesthetics and function make its fractures significant.

## Correct Answer: D. Limited mouth opening is not a direct feature.