The answer is D because it reflects most on what the passage is about.
3. Tone: An angry tone
Context Clues: 'Screamed uncontrollably' and 'bursting through the door'.
Mood: Anger
6. Tone: A mellow, happy tone
Context Clues: 'Gently smiling', 'comforting ray of light' and 'carefully, quietly'
Mood: Calming
7. Tone: Cheery tone
Context Clues: 'The laughing wind', 'teasing the trees' and 'silly dog'.
Mood: Happy, upbeat
The correct answer is indeed C. When people are doing ordinary things, such as eating or walking. the poem talks about the indifference that most people feel towards the suffering of others, that could be taken place "While someone else is eating or opening a window or just walking dully along".