The correct answer is "ภาพ 3 มิติ" because a 3-dimensional image refers to an image that has width, length, and depth, which means it has three dimensions. In contrast, a 2-dimensional image only has width and length, while a 4-dimensional image refers to a hypothetical concept that includes time as the fourth dimension. Therefore, the image that displays width, length, and depth is a 3-dimensional image.