What does an Extreme Close Up (ECU) typically highlight?

An Extreme Close Up (ECU) is a shot that focuses on a very specific detail, such as a person's eyes, a hand gripping an object, or any small part of a subject that conveys significant emotional or narrative information. Utilizing this technique allows the audience to connect more deeply with the subject by emphasizing feelings or thematic elements that might otherwise go unnoticed in wider shots. This technique is particularly powerful in storytelling, as it draws attention to important visual cues that enhance the overall narrative, making the viewer more engaged with the emotional context of the scene.

The other options center around broader shots that encompass larger portions of the subject or scene, which do not provide the intense focus on intricate details characteristic of an Extreme Close Up. Thus, the effectiveness of the ECU in conveying emotion and detail makes option D the correct choice.