With this image the artist utilized the theory of proportion by

A. Keeping the object in the background and the foreground all the same size
B. Making the object in the foreground appear smaller
C. Making the object in the foreground appear larger
D. Having the image looking down from the sky

The theory of proportion refers to the relative size and scale of elements within an artwork. Without being able to see the image you are referencing, I cannot provide a specific answer. However, in general, option C - making the object in the foreground appear larger - often aligns with the use of proportion in creating depth and visual hierarchy in an artwork.