What is a metaphor?

A metaphor is indeed a figure of speech that involves making an implicit comparison between two unlike things, implying that one is the other in a figurative sense. This allows for deeper understanding and insight by drawing connections between ideas or concepts that are not literally applicable. For instance, saying "Time is a thief" suggests that time can take away moments from our lives, similar to how a thief might take away possessions. This figurative language enriches writing by adding layers of meaning and emotion, allowing readers to grasp complex ideas in a more relatable way.

The other options do not accurately define a metaphor. The description of a type of poetry expresses emotions, while character representatives and narratives focus on different elements within literature, none of which capture the essence of the figurative comparisons that a metaphor provides.