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

a. Liam: Hi, Sophia! It’s going well, but it’s harder to change my old eating habits than I thought.
b. Sophia: Hey, Liam! How’s the new diet plan working out?
c. Sophia: That’s a great reason. Keep it up—I’m sure you’ll feel the difference soon!
d. Liam: My doctor suggested it to help with my energy levels. Plus, I wanted to feel healthier.
e. Sophia: Really? I'm wondering why you decided to make a change.