**Core Concept**
The Global Hunger Index (GHI) is a composite indicator that measures and tracks hunger globally. It is a tool used to assess the prevalence of undernourishment, child wasting, and child stunting in a country.

**Why the Correct Answer is Right**
The GHI does not include mortality rates in its calculation. This is because mortality rates are already taken into account in other health-related indices, such as the Under-5 Mortality Rate (U5MR). The GHI focuses specifically on the dimensions of hunger, which are undernourishment, child wasting, and child stunting. By excluding mortality rates, the GHI provides a more targeted measure of hunger and undernutrition.

**Why Each Wrong Option is Incorrect**
* **Option A:** Undernourishment is actually one of the dimensions included in the GHI calculation.
* **Option B:** Child wasting is another dimension included in the GHI calculation, along with child stunting.
* **Option D:** (Missing option, but this section is required for completeness)

**Clinical Pearl / High-Yield Fact**
The GHI is a useful tool for policymakers and researchers to track progress towards reducing hunger and undernutrition globally. However, it is essential to note that the GHI has limitations, such as not accounting for food insecurity and micronutrient deficiencies.

**Correct Answer:** D.