Answer:
The correct answer is option B) She is too generous.
Step-by-step explanation:
This question refers to the story THE LANDLADY by ROALD DAHL.
The landlady seems "slightly dotty" to him as she is too generous and caring. Not only does she rent him a room at a very cheap price, but she is attentive to him and helps him with everything.
In fact, Billy says that she is "a kind and generous soul".