The option that would result in decreased production/visualization of blur when compensating for changes in optical density is the use of a 0.6-mm focal spot. Option 1.
Decreasing the focal spot size (using a 0.6-mm focal spot) results in improved spatial resolution and decreased production of blur in the radiographic image.
A smaller focal spot produces a sharper image by reducing the size of the area exposed to X-rays, enhancing detail and minimizing blurring effects.
Changing the source-to-image distance (SID), as option 2 states, does not directly affect focal spot size or blur, and it primarily influences magnification.