**Core Concept**
The question is testing the understanding of the relationship between disease prevalence and the resulting impact on the population's health and disease burden. Prevalence refers to the total number of cases of a disease present in a population at a given time, regardless of when the disease occurred.

**Why the Correct Answer is Right**
An increase in disease prevalence means that more individuals in the population are affected by the disease. This can lead to a higher number of hospitalizations, increased healthcare costs, and a greater demand for medical services. As a result, healthcare systems may experience increased pressure to manage the growing number of cases, leading to a greater **burden of disease**.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not directly related to the impact of increased prevalence on healthcare systems. While it may be a consequence of increased prevalence, it is not the most direct or obvious outcome.
* **Option B:** This option is incorrect because it describes a different concept altogether. Incidence refers to the number of new cases of a disease that occur within a population over a specified period, not the total number of cases present at a given time.
* **Option C:** This option is not a direct consequence of increased prevalence. While it may be related to the management of disease, it is not the most relevant outcome in this context.

**Clinical Pearl / High-Yield Fact**
When assessing the impact of disease prevalence, it is essential to consider the **burden of disease**, which includes the total number of cases, the severity of the disease, and the resulting healthcare costs and demands.

**Correct Answer: C. Increased burden of disease.**