What type of shot narrows the center of interest, clarifying the "what" of a scene?

The correct answer is a close-up shot. A close-up shot is characterized by focusing tightly on a particular subject or object within the scene, thereby narrowing the center of interest. This type of shot effectively highlights details and emotions, allowing viewers to connect more intimately with the subject.

Close-up shots often serve to clarify and emphasize critical elements within a narrative, making it easier for the audience to grasp the "what" of a scene. For instance, a close-up of a character's face can convey feelings and reactions that are essential to understanding the story, enhancing emotional engagement and clarity.

In contrast, the other types of shots serve different narrative and visual purposes. A medium shot tends to include more of the environment along with the subject, providing context but not as much focused detail. A wide shot encompasses a broader view, establishing the setting without honing in on specific focal points. An over-the-shoulder shot presents a perspective that signifies engagement or connection but doesn't inherently clarify or narrow the center of interest.