Final answer:
The section 'Pleasantly Surprised' is likely placed after 'Gift of 2,090 Trees' to provide a deeper insight into Dr. O Takamine's character by sharing details of his life following a positive portrayal.
Step-by-step explanation:
The arrangement of sections in any narrative is typically meant to serve the story's structure, characterization, and thematic expression. In the context provided, placing the section Pleasantly Surprised after the section Gift of 2,090 Trees seems designed to provide insight into Dr. O Takamine's character, which suggests that option (a), 'To share details about Dr. O Takamine's life after portraying him positively,' could potentially be a correct choice. This sequencing allows the narrative to offer a deeper understanding of the character's life and contributions to the story and could be aimed at enhancing the reader's connection with him. Options (b), (c), and (d) seem less likely without additional context regarding the content and themes of the narrative.