Sara Nesbitt: Negative Space.

A. Negative space is all of the space around an object. It's just the empty space. 

B. I first drew the stools, and then after I had the object I used a darker shade of my pencil and shaded the rest of the space that was not part of the object, but just there. There was also an orange piece of paper behind the drawing, and everywhere you could see orange was negative space, so you just color that in. 
In my cut outs, I just cut every part of the tree out and then found the outline. Everything else I put on the other side. 

C. It helps when artists can see negative space because it gives the picture a 3D atmosphere, and helps them see all parts of the picture, instead of just the outline. You can't draw an accurate picture with just the outline. 

D. Yes, seeing negative spaces can enhance the drawing because the picture is flat unless you see the entire thing. I believe that the picture won't be complete unless you see every aspect.