Final answer:
The lines from Passage 2 express a yearning for a past connection with nature, symbolized by Pan's music, that the modern world has lost, signifying a deeper spiritual disconnect.
Step-by-step explanation:
The changes in lines 21 through 27 of Passage 2 suggest that the world has lost its connection to the natural, pastoral music of Pan and by extension, a simpler, more spiritually fulfilling existence. Words such as 'the world is too much with us' and 'we are out of tune' indicate a disconnect with nature. This feeling of loss and yearning for a return to a time when mythical deities like Pan symbolized a closer bond with the earth and its inherent divinity is juxtaposed against the alienation of the modern world. The lines explore nostalgia for a past where humanity was more in harmony with nature and where music, like that of Pan's pipe, offered a direct conduit to the spirit, devoid of contemporary civilization's materialism and disconnection.