Phagocytosis of C. neoformans is inhibited by:
**Core Concept**
The underlying principle being tested is the **immunopathogenesis** of *Cryptococcus neoformans* infection, specifically how this **fungus** evades the host's **immune system**. *C. neoformans* is a type of **encapsulated yeast** that can cause **cryptococcosis**, particularly in **immunocompromised** individuals.
**Why the Correct Answer is Right**
The correct answer is related to the mechanism by which *C. neoformans* avoids **phagocytosis** by **macrophages** and other **phagocytic cells**. The **capsule** of *C. neoformans* plays a crucial role in this process, as it prevents effective **phagocytosis**.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not directly related to the inhibition of phagocytosis of *C. neoformans*.
**Option B:** Incorrect as it does not accurately describe the mechanism of immune evasion used by *C. neoformans*.
**Option C:** Incorrect because it is not the primary method by which *C. neoformans* inhibits phagocytosis.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that the **capsule** of *C. neoformans* is a major **virulence factor**, and its presence is crucial for the fungus's ability to cause disease, particularly in **immunocompromised hosts**.
**Correct Answer:** D. Capsule.