Final answer:
The passage 'The Solitary Summer' is best summarized by the narrator's desire for solitude in nature and her husband's belief that she will find it boring.
Step-by-step explanation:
The correct statement that best summarizes the passage 'The Solitary Summer' is that the narrator longs to spend the summer in solitude out in nature, and her husband thinks that she will be bored. This choice reflects the themes of solitude, nature, and introspection depicted in the various literary excerpts provided. From descriptions of enjoying the natural world to the contemplation of solitary existence away from society, all the passages convey a sense of seeking or reflecting on the experience of being alone.