Achille De gas in the Uniform of a cadet by Edgar Degas

How was the proportion used in this image?

A) to create a mood of tranquility
B) to create an optical illusion
C) to create a sense of perspective in the image
D) to make sure the person was drawn correctly

i think A

2 answers

Well, I would not choose A, but art is in the eye off the beholder. Degas used proportion, I think, to give a sense of perspective, to keep your eye on the figure, not the background. But I don't know what your teacher is leading you to see.
http://en.wikipedia.org/wiki/Luncheon_in_the_Studio#/media/File:Achille_De_Gas_in_the_Uniform_of_a_Cadet.JPG

This one? I think Reed is right. What else is going on in this painting?