Which of the following images demonstrates the highest spatial resolution?

Spatial resolution refers to the ability of an imaging system to resolve fine details within an image. The higher the spatial resolution, the more detail can be distinguished in the image. In assessing different images for spatial resolution, key factors such as pixel size, the modulation transfer function (MTF), and the overall clarity or sharpness of the image are considered.

In this case, the image that demonstrates the highest spatial resolution would exhibit clear, well-defined details with minimal blurriness or pixelation. It would allow observers to distinguish between closely spaced structures without confusion.

When evaluating the images, one must look for characteristics like smooth edges, clear lines, and the ability to discern small features—these factors indicate that the image is capturing a higher level of detail, which directly correlates to high spatial resolution.

Image (D) is chosen as the correct answer likely because it exhibits these qualities more effectively than the others, making it superior in resolving fine details. Therefore, it is recognized as the image demonstrating the highest spatial resolution in the comparison.