Histogram

a.   In the high key image the histogram falls more on the right side. 

b.    Not in this image because their aren't any highlight clipping.

c.     In the low key image the histogram falls more on the left side. 

d.      Not in this image because their aren't any shadow clipping.

e.   The pixels are pretty much everywhere but they are a bit more to the left side.

f.      Yes their is in the highlights.

g.     Yes because it was not clipping any of the highlights or shadows in the high key and low key pictures. 

h.    the mixed one because it has information everywhere in the histogram