To determine how the author develops the central idea in paragraph 3, you should look closely at the actual content of that paragraph. Here's a brief explanation of what each option entails:
A. Example of successful reforestation: Would suggest the paragraph provides a specific instance where reforestation has been effective.
B. Difference between afforestation and reforestation: Indicates that the paragraph clarifies these two often-confused concepts.
C. Procedure to stop deforestation: Would imply that the paragraph outlines a method or strategy to combat deforestation.
D. Effects of deforestation on a country: Suggests the paragraph discusses the broader implications of deforestation on a national scale.
You need to analyze paragraph 3 based on these descriptions to identify which option the author uses to develop the central idea. If you can share more details or the text of that paragraph, I can help guide you more specifically to the correct option.