I think you forgot to add the passage along with the question. I am answering the question based on my knowledge and research. "She is gloomy and depressed" is the one among the following choices given in the question that is how Sally's <span>mood correspond to the setting, as described in the passage.</span>
<span>Remember to look for mistakes you have made in the past.
This is the best choice so you can learn from your past mistakes to make sure you do not make the very same mistake again!
:)</span>
D they introduce the theme.