To determine the correct tone expressed in paragraphs 23 and 24 of "The Green Belt Movement," it would be beneficial to analyze the context and language used in those specific paragraphs. However, without the text of the paragraphs, I can provide a general analysis based on common themes in environmental movements.
If those paragraphs highlight positive outcomes, the importance of the movement, and the value of community efforts, then "appreciation" would likely be the most fitting choice. Conversely, if they reflect doubt or negative outlooks, "pessimism" might be appropriate. "Curiosity" might apply if the tone is exploratory, and "arrogance" would suggest a dismissive or condescending attitude.
Based on typical themes of environmental advocacy, "appreciation" is often a common tone. However, I would recommend checking the specific text to ensure accuracy in the choice.
If you can provide the text of those paragraphs or their main ideas, I can assist you further in selecting the most appropriate tone.