If I am not mistaken your answer should be B She is in the room, but her thoughts are about something or someone not in the living room. I hope this helped absently means vaguely
Dumbfounded means to be left utterly speechless, or to simply be amazed/confused.
Answer:
1. Sarah will finish her exams as soon as she will travel to London.
2. We will be able to visit the museum tomorrow.
3. Eating junk food is harmful for our health.
4. (e.g.) I can increase the amount of times that I workout every week.