**Core Concept**
The **Packed Cell Volume (PCV)**, also known as **Hematocrit (Hct)**, is the proportion of blood volume that is occupied by red blood cells. It is an important parameter in diagnosing and monitoring various medical conditions, including anemia and polycythemia.

**Why the Correct Answer is Right**
A normal **PCV** value typically ranges from 40% to 54% for males and 37% to 48% for females, though these values can slightly vary between laboratories. This range is crucial for maintaining adequate oxygen delivery to tissues without excessively increasing blood viscosity.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it's below the normal range, potentially indicating anemia.
**Option B:** Incorrect as it falls below the normal range for males.
**Option D:** Incorrect because it exceeds the upper limit of the normal range, suggesting polycythemia.

**Clinical Pearl / High-Yield Fact**
Remember, **PCV** is a critical component of a complete blood count (**CBC**), and its abnormal values can have significant clinical implications, including guiding transfusion decisions and diagnosing hematological disorders.

**Correct Answer:** C. 40-54%