Hello. You did not enter the text to which this question is related, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.
To answer this question, you must first read the entire text and reread the lines 1-9 where Kathleen's question is presented. After understanding her question, you should make notes about why she asked that question, how deep the question is, and how important it is for Kathleen. Then, you must analyze whether the narrator is effective in answering that question, if so, you must show why. If the narrator is not effective, you should also explain why and come up with a more appropriate answer suggestion. Finally, you must show why the speaker wants to explain the answer a little more and how it would affect the question.
"poetic description" is the only real option from the list that is not common in expository writing, although careful descriptions can indeed be used as long as the point remains clear and forceful.
Answer:
Option D, more accurate scientific studies
Hope this helps!
