**Core Concept**
Hodgkin lymphoma is a type of cancer that affects the immune system, characterized by the presence of Reed-Sternberg cells. There are several subtypes of Hodgkin lymphoma, each with distinct clinical and pathological features. The "B" symptoms, which include fever, night sweats, and weight loss, are a key factor in staging and determining the prognosis of Hodgkin lymphoma.

**Why the Correct Answer is Right**
The subtype of Hodgkin lymphoma most commonly associated with "B" symptoms is classical Hodgkin lymphoma (cHL), particularly the nodular sclerosis subtype. This is due to the presence of the Epstein-Barr virus (EBV) in the Reed-Sternberg cells, which is thought to contribute to the development of systemic symptoms. The nodular sclerosis subtype is also characterized by the presence of lacunar Reed-Sternberg cells, which are typically EBV-positive.

**Why Each Wrong Option is Incorrect**
* **Option A:** Lymphocyte-predominant Hodgkin lymphoma (LPHL) is a rare subtype of Hodgkin lymphoma that is typically characterized by a favorable prognosis and minimal systemic symptoms.
* **Option B:** Mixed cellularity Hodgkin lymphoma is another subtype of cHL, but it is not as commonly associated with "B" symptoms as nodular sclerosis cHL.
* **Option D:** Nodular lymphocyte-predominant Hodgkin lymphoma is a distinct subtype of LPHL that is characterized by a specific type of Reed-Sternberg cell called lymphocytic and histiocytic (L&H) cells.

**Clinical Pearl / High-Yield Fact**
The presence of "B" symptoms in Hodgkin lymphoma is associated with a poorer prognosis and requires more aggressive treatment. The nodular sclerosis subtype of cHL is the most common subtype in developed countries, and its presence should prompt a thorough evaluation for systemic symptoms.

**Correct Answer:** C.