**Core Concept**
Laryngeal cancer is a type of head and neck malignancy that arises from the epithelial lining of the larynx. Understanding the specific features of laryngeal cancer is crucial for diagnosis and management.

**Why the Correct Answer is Right**
The glottis is indeed the most common site for laryngeal cancer, accounting for approximately 90% of cases. This is due to the high frequency of exposure to carcinogens such as tobacco smoke and alcohol in this area. Lesions in laryngeal cancer are typically seen at the edge of the vocal cord, rather than the center, where they can cause hoarseness and other symptoms. The laryngeal compartments do act as a barrier to the spread of cancer, but this is not a specific feature of laryngeal cancer. Metastasis to cervical lymph nodes is a common feature of many cancers, not unique to laryngeal cancer.

**Why Each Wrong Option is Incorrect**
**Option B:** While cervical lymph node metastasis can occur in laryngeal cancer, it is not a defining feature of the disease.
**Option C:** Lesions in laryngeal cancer are typically seen at the edge of the vocal cord, not in the center.
**Option D:** While the laryngeal compartments do act as a barrier to the spread of cancer, this is not a specific feature of laryngeal cancer.

**Clinical Pearl / High-Yield Fact**
The most common site for laryngeal cancer is the glottis, and lesions are often seen at the edge of the vocal cord. This is due to the high frequency of exposure to carcinogens in this area.

**Correct Answer:** a) Glottis is the MC site