**Core Concept**
A panel discussion or a debate is a form of interactive presentation where a group of experts engage in a discussion on a specific topic, often in front of an audience. This format allows for diverse perspectives, opinions, and experiences to be shared, fostering a deeper understanding of the subject matter.

**Why the Correct Answer is Right**
The primary purpose of a panel discussion is to facilitate a dynamic exchange of ideas, promote critical thinking, and encourage active participation from the audience. This format is particularly useful for complex topics that require a multifaceted approach, such as medical ethics, policy-making, or cutting-edge research. By presenting multiple viewpoints, panel discussions enable the audience to gain a more comprehensive understanding of the issue, making it an effective tool for education and knowledge dissemination.

**Why Each Wrong Option is Incorrect**
* **Option A:** A presentation is a one-way communication where a single speaker shares information with the audience, which is not the case in a panel discussion.
* **Option B:** A lecture is a formal address by an expert on a specific topic, often with minimal audience interaction, which is distinct from a panel discussion.
* **Option C:** A case conference is a clinical meeting where healthcare professionals discuss patient cases, but it typically involves a more formal and structured format than a panel discussion.

**Clinical Pearl / High-Yield Fact**
When engaging in a panel discussion, it's essential to be prepared to articulate your thoughts, listen actively to others, and respond thoughtfully to questions and comments from the audience.

**Correct Answer: C. A case conference is a clinical meeting where healthcare professionals discuss patient cases, but it typically involves a more formal and structured format than a panel discussion.**