Respuesta :
The correct answer is A. Isolation
Explanation:
In novels such as The Metamorphosis by Franz Kafka, a theme is an idea expressed through different elements such as characters, events, or settings.
In the excerpt, the main theme is the isolation, this can be seen in the events described by the narrator because the main character Gregor is isolated in his room and unable to access the living room or any other space in the house. This can be seen in "He had been reduced to the condition of an ancient invalid and it took him long, long minutes to crawl across his room". This theme is also expressed in the fact the door of Gregor's room is not always opened and even when it is opened he can only watch the family but not join it "lying...where he could not be seen from the living room, he could watch the family in the light of the dinner table".