Context: I heard some cackling in the background ( I hope they were n't watching it on the monitor ) . I tried to do it as quickly as possible . A couple of times , someone tried to open the door .
Question: What is a likely source of the cackling that was heard by the speaker ?
Option 0: There is a wild animal inside making this noise
Option 1: Someone is choking , making a cackling sound
Option 2: None of the above choices .
Option 3: Someone is watching them and laughing
Answer: 3