The setting in "The Open Window" influences Mr. Nuttel’s expectations about the interaction he is about to have mainly because he does not expect the visit among strangers to have much value. He is in a rural retreat, and his previous conversation with his sister underscores his anxiety about engaging with people he does not know. This sense of trepidation is compounded by his purpose for the visit, which is to seek a cure for his nerves, and he doubts that formal visits could be beneficial. His anticipation of a mere formality causes him to approach the interaction with skepticism regarding its potential value. Therefore, the correct response is:
He does not expect the visit among strangers to have much value.