Answer:
The reason why she does not want to remove the furniture from his room is:
B. She believes Gregor will need the furniture when he becomes human again.
Explanation:
In Kafka's "The Metamorphosis," Gregor is a young man who, one day, wakes up to find himself transformed into a bug. His transformation has a huge toll on his own life as well as on everyone around him. His family is disgusted at the sight of him. With time, however, some begin to understand that now he has different needs. Grete, his sister, understands that he needs more room to move around. However, Gregor's mother does not want to remove the furniture. She still hopes Gregor will go back to his human form one day and, to her, removing the furniture means they are giving up on that idea - giving up on hope and on him. Even though her feelings are understandable, they prevent her from accepting this new reality and even from loving Gregor.
