The best topic sentence is "Jack London’s story “To Build a Fire” helps readers understand the harsh natural elements faced by prospectors in the early 1900s."
A topic sentence is a statement that conveys the main idea of the paragraph or text in which it appears. Here, we must choose a topic sentence that is related to the time period depicted in "To Build a Fire."
Taking into consideration that the story takes place in the region of Yukon during the Gold Rush, the best option is letter C. It mentions the early 1900s and the difficulties faced by the prospectors.
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