Respuesta :
In this sentence, the word proper means that his room is a normal bedroom, so the answer is C.
The correct answer is letter C. It is a normal room, functioning as a bedroom.
The excerpt from Franz Kafka's "Metamorphoses" describes the room in which the main character Gregor wakes up having been misteriously turned into a bug overnight. The room is however described as a "normal, human" one, which seems a "little too small, probably due to the new shape of its inhabitant.