I think the answer is the last one. Association of letters and words. I hope this helps!
C
Because
A.this is in the stratosphere
B.Thats the exosphere
D.this is from the ozone layer which is in the stratosphere
Using my common sense and a bit of knowledge in English, I can infer that she feels strongly about her garden and loves it very much. This leads me to believe that she is a loving and caring character. If something is described vividly this generally means that 1) this is a good writer 2) they feel strongly about what they are writing 3) both a good writer and a strong feeling