The correct answer is By comparing recycling one object to make another to writing a found poem.
Step-by-step explanation:
Found poetry implies using elements from other poems and texts to create a new and unique poem. This idea of reusing elements from other texts is clarified in "words are borrowed, and yet the poem is unique". Moreover, the author illustrates the idea in "Just as plastic bottles can be recycled to make a new chair..." because this detail shows similar to recycling found poem uses already existing texts to create something different. According to this, the correct answer is "By comparing recycling one object to make another to writing a found poem."