Answer:
China’s One-Child Policy has been very successful at curbing the population problem.
Explanation:
Answer: A. must
Explanation:
<em>There's a lot of distraction coming from passing vehicles, Lena </em><em><u>must</u></em><em> close the door? </em>
The activities of the passing vehicles were a distraction to the speaker and so wanted Lena to close the door. The right way to say this is, ''...Lena must close the door.''
You can see in the first and second paragraphs how she feels at peace (or rested).
Then take a look at the third paragraph and notice how this feeling is starting to inspire her.
I believe the answer you are looking for here is 'inspired'.