Explanation: In "A Long Way Home," the narrator employs Google Earth as a tool to search for his original home, a task that requires a methodical and strategic approach. The correct method described in the text is that the narrator starts at Kolkata, a major city in West Bengal, and searches the train lines working outward. This method is chosen because it aligns with the narrator's memories of his journey and provides a logical path to follow.
The use of Kolkata as a starting point is significant because it is a well-known and easily identifiable location. From there, the narrator can trace the train lines, which are a crucial part of the transportation network in India and likely played a role in his past travels. By following these lines, the narrator can systematically explore areas that are more likely to be connected to his original home, based on his recollections.
The other options are incorrect for the following reasons:
- Option A suggests focusing on every train station in India, which would be impractical and inefficient. The narrator's method is more targeted and based on his specific memories.
- Option C implies scanning the entire map of India, which would be too broad and not focused enough on the narrator's specific recollections.
- Option D involves tracing the rivers of India from the sea inland, which, while potentially significant, does not align with the narrator's method of using train lines as a guide.
The use of Google Earth in this context is a powerful tool for the narrator, allowing him to visualize and explore the landscape of his past. It serves as a bridge between his memories and the physical world, helping him to piece together the details of his journey and ultimately find his way home. This method demonstrates the importance of using specific, targeted approaches in problem-solving and the power of technology in aiding personal discovery.