Answer:
The reader can infer that Rachel does not think it is a good idea for Marilla and Matthew to adopt the boy based on paragraphs 9-13. The passage states that Rachel questions Marilla about the boy's background and seems hesitant about the adoption, suggesting that she may not think it's a good idea. There is no indication that Rachel believes Matthew likes going to the zoo or that Marilla is excited about Rachel discovering their decision.
Explanation: