The answer is B, he plans to take his sister shopping for a present.
Tone indicates the writer's attitude. Often an author's tone is described by adjectives, such as: cynical , depressed , sympathetic , cheerful , outraged , positive , angry , sarcastic , prayerful , ironic , solemn , vindictive , intense , excited.
D) Money does not bring as much happiness as friendship
Presenting sound reasons and credible evidence for the author's claim.