Mark the letter A, B, Cor D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

a. Sarah: Thank you! I finally decided to take my health seriously after realizing how inactive I had become.
b. Tom: That's inspiring. I think I also need to learn how to lead a more independent and healthy lifestyle.
c. Tom: I've noticed the positive changes in your lifestyle lately - your diet, exercise, everything! You look fantastic.