Final answer:
The best way for Arthur to respond is by stating his ideas and using evidence from the text to support them.
Step-by-step explanation:
The best way for Arthur to respond is 1) by stating his ideas and using evidence from the text to support them. By doing so, Arthur can present his own thoughts and opinions on the subject, backed by evidence from the text. This approach allows Arthur to engage in a meaningful discussion and provide a well-supported argument.