Identify the figure of speech used in the given sentence:

"Life is a dream"

Metaphor

The figure of speech used in the given sentence is metaphor.

A metaphor is a figure of speech that compares two things without using the words "like" or "as." In the sentence "Life is a dream," the speaker is comparing life to a dream. This creates a sense of the impermanence and unreality of life.

The other answer choices are incorrect. Simile is a figure of speech that compares two things using the words "like" or "as." Personification is a figure of speech that gives inanimate objects human qualities. Hyperbole is a figure of speech that uses exaggeration to create an effect. None of these devices are used in the sentence "Life is a dream.".

The metaphor "life is a dream" has been used by philosophers and poets for centuries. It is a way of expressing the idea that life is fleeting and uncertain, and that we are all ultimately living in a state of illusion.