Hearing these words from his mother made Gregor realise that the lack of any direct human communication, along with the monotonous life led by the family during these two months, must have made him confused — he could think of no other way of explaining to himself why he had seriously wanted his room emptied out.
Which theme does this passage best develop?

A.
Loneliness can often lead one to further isolate oneself from others.

B.
Family relationships often lead to anger and discontent with one's life.

C.
Communication between family members can often be stressful and strained.

D.
Isolation often causes one to seek out love and attention from family members.