Based on the options provided and the context of an image's post-processing, the most likely action taken would be removal of dark rain clouds. This action typically aims to enhance the image's overall aesthetics by improving lighting and mood, which is a common post-processing practice.
The other options, like the addition of raspberries or butter, would imply altering the original composition of the image rather than correcting or enhancing it, while the removal of irregular pancakes may pertain more to food styling than post-processing in a photographic sense.