Answer:
a. He has not eaten for a long time.
Step-by-step explanation:
In this novella by Franz Kafka, Gregor wakes up one day to find himself turned into some sort of bug. At first, his sister takes care of him, but as the burden on his family increases, they all stop caring for him. Eventually, after a fateful event in which Gregor leaves his room, he comes to realize definitively that his family no longer cares for him and that he is a burden so he lets himself starve to death and by the next morning he is found dead.