The sentence that expresses one theme developed in the passage is that "People who hold high opinions of themselves are often not as smart as they believe"
- Based on the excerpt, it should be noted that Ollendorf kept saying he could lead them in the right direction because he had a compass.
- Ollendorf believed that he was wise and that he knew the way, but he kept leading them in circles. Therefore, this illustrates that the people who hold high opinions of themselves are often not as smart as they believe.
In conclusion, the correct option is B.
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