Context: I was up again this morning at 5 am . I tried in vain to go back to sleep , but finally got up around 6 am . It gave me a nice quiet bit of alone time in the garden .
Question Why did they stay in bed for another hour after they got up ?
Possible answers:
Available choices:
 (1). They did n't want to disturb everyone else in the house .;
 (2). None of the above choices .;
 (3). They need to take medicine at a certain time .;
 (4). They wanted to see if they 'd go back to sleep .;
The answer:
(4).