The answer is C. Landscape orientation.
Explanation:
In all, word and image processing software, the portrait posisiton will be easily identified for being taller than wider, in that way the image can be seen as an actual portrait/vertical, there it comes its name. On the other hand, once you place the page in horizontal/landscape, it means you want to have a wide view of the image/or text, that is why it is called landscape in some software such us coreldraw, AutoCAD and inkscape, in word, for example this position is called horizontal.