**Core Concept**
Hodgkin's lymphoma is a type of lymphoma characterized by the presence of Reed-Sternberg cells, which are large, abnormal lymphocytes. It is known for its distinct pattern of spread, which is often predictable and follows a stepwise progression.

**Why the Correct Answer is Right**
Hodgkin's lymphoma typically spreads in a predictable, contiguous manner, often involving lymph nodes in a specific sequence. This characteristic pattern of spread allows for effective staging of the disease, which is a critical prognostic factor. The Ann Arbor staging system, which takes into account the extent of disease spread, is commonly used to stage Hodgkin's lymphoma. The predictable pattern of spread is due to the involvement of lymphatic vessels and the presence of lymphatic spread in the early stages of the disease.

**Why Each Wrong Option is Incorrect**
**Option A:** Multiple myeloma is a type of plasma cell malignancy that does not typically follow a predictable pattern of spread. It often involves the bone marrow and can cause lytic lesions in bones.
**Option B:** Mature T cell NHL and Mature B cell NHL are both types of non-Hodgkin lymphoma, which can have a more heterogeneous and unpredictable pattern of spread.

**Clinical Pearl / High-Yield Fact**
The presence of Reed-Sternberg cells is a hallmark of Hodgkin's lymphoma, and their presence is essential for diagnosis. These cells are often large and binucleated, with a distinctive appearance under the microscope.

**Correct Answer Line**
✓ Correct Answer: A. Hodgkin's lymphoma