**Core Concept**
Mortality statistics are taken into account while calculating a measure that reflects the severity of a disease or its impact on a population. This measure is used in epidemiology to quantify the burden of a disease and is essential for public health decision-making.

**Why the Correct Answer is Right**
The correct measure is the **Case Fatality Ratio (CFR)**, which is the number of deaths from a particular disease divided by the number of people diagnosed with the disease over a specific period. This calculation involves mortality statistics, as it directly relates to the number of deaths. The CFR is an essential tool in understanding the severity of a disease and the effectiveness of treatment.

**Why Each Wrong Option is Incorrect**
**Option A:** The **Incidence Rate** is the number of new cases of a disease occurring within a specified period among a population at risk. It does not directly involve mortality statistics.

**Option B:** The **Mortality Rate** is the number of deaths from all causes within a population over a specified period, expressed as a rate. While it involves mortality statistics, it does not specifically relate to the severity of a disease.

**Option C:** The **Prevalence Rate** is the total number of cases of a disease in a population at a given time, including both new and existing cases. It does not directly involve mortality statistics.

**Option D:** The **Morbidity Rate** is the number of new cases of a disease occurring within a specified period among a population at risk. It does not directly involve mortality statistics.

**Clinical Pearl / High-Yield Fact**
When interpreting mortality statistics, it's essential to consider the **Case Fatality Ratio (CFR)** as a measure of disease severity, as it provides a clear indication of the proportion of people diagnosed with a disease who ultimately die from it.

**Correct Answer:** C.