15 minutes later she resigned to the fact that she could be in there all day long so she started looking around . That 's when she noticed the 6.5-inch gap above and below the otherwise impenetrable door , and a bulb went off inside her dome .

Generate a question about the above context.
Why is the narrator expressing some optimism ?
Choose from:
1). None of the above choices .;
2). The narrator feels they are about to get a new job .;
3). The narrator feels they found an escape route .;
4). The narrator feels they are about to be rewarded .;