Which figure of speech is used in this text?

Noah remarked that the new book on anti-gravity was impossible to put down.
(1 point)
• metaphor
• pun
• hyperbole
• simile

1 answer

The figure of speech used in the text is a pun. The phrase "impossible to put down" plays on the literal notion of anti-gravity and the figurative expression meaning that the book is so engaging that one cannot stop reading it.