Answer: En el verano de Chile por siete días
Step-by-step explanation:
The question is: How long will the narrator be in Chile?
and the information that we have is in the text.
the text says:
"In December, my family and I will go to Santiago, the capital of Chile. We will start our trip the day next to my exams and will be there for a week..."
And the text keeps talking about the things that the narrator will do in chile.
The possible answers are:
1) In the summer of Chile for seven days
2) In the winter of Chile for five days.
3) In the winter of Chile for seven days.
4) In the summer of Chile for five days
In December, while in the US is winter season, in Latinamerica is summer, and we know that the narrator will stay for a week, which is seven days.
So the right answer is the first option: En el verano de Chile por siete días.