I beleave it would be letter c
It means that a person is currently unemployed - having quit, been fired, or laid off from his or her job, or the previous job was temporary and has now ended - and the person has not yet found a new job.
Most likely, Gregor will open the door or someone in his family is going to force the door open. This will reveal Gregor's new form and the reader will get to see how Gregor's family reacts to his sudden transformation. Most likely they will be shocked and afraid at first.
