**Core Concept**
The grey hepatization stage of community-acquired pneumonia is a critical phase characterized by the accumulation of leukocytes, leading to lung consolidation. This stage follows the initial exudation of fluid and fibrin into the alveoli, and it is marked by the presence of a dense, firm, and greyish-white mass.

**Why the Correct Answer is Right**
During the grey hepatization stage, neutrophils are the dominant cell type. Neutrophils are a type of granulocyte that plays a crucial role in the innate immune response, particularly in the initial phase of bacterial infections. They migrate to the site of infection, where they phagocytose and kill bacteria, contributing to the inflammatory response. The presence of neutrophils in the lungs during this stage is a result of the chemotactic response to bacterial products, such as lipopolysaccharides and peptidoglycans, which stimulate the release of neutrophil-attracting chemokines, like interleukin-8 (IL-8).

**Why Each Wrong Option is Incorrect**
**Option A:** Eosinophils are a type of granulocyte involved in the response to parasitic infections and in allergic reactions, but they are not the dominant cell type during the grey hepatization stage of pneumonia.
**Option C:** Macrophages are also involved in the response to bacterial infections, but they are more abundant during the later stages of pneumonia, such as during the resolution phase, where they help to clear dead cells and debris.
**Option D:** Monocytes are precursor cells to macrophages and are not typically the dominant cell type during the grey hepatization stage.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the progression of pneumonia is characterized by a sequence of events, including initial exudation, followed by the grey hepatization stage, and finally, resolution. Understanding the dominant cell types during each stage is crucial for diagnosing and managing pneumonia.

**✓ Correct Answer: B. Neutrophils**