Answer:
How such enormous monuments
were moved across the land is a mystery, and
when asked to reveal the secret the chief will
say only, with a wry smile. "They walk"
Step-by-step explanation:
Personification is a literary device in which an inanimate object is given human attributes.
From the answer above, the writer is astonished at how the inhabitants of the island are able to move the 30 feet high stone statues and when the chief was asked the secret, he responded that the monuments walked.
Walking is a human attribute
The stone statues are inanimate objects and so cannot walk.
Therefore, the sentence best uses personification to show the writer's sense of wonder.