Without the specific underlined sentence from the excerpt, I can provide a general analysis of Framton's character in H. H. Munro's "The Open Window." If the underlined sentence indicates his unfamiliarity with his surroundings, then it suggests he is out of his element. If it indicates he is easily irritated, it reflects his temperament. If it suggests a lack of courage, it highlights his apprehension in new situations. Lastly, if it implies he is self-conscious about his shyness, it showcases his awareness of social anxiety.
To accurately select the best option, I would need the exact underlined sentence you're referring to. Please provide that for a more precise analysis.