Which example best illustrates metaphor?

The choice that best illustrates a metaphor is the statement "Life is a journey." This example directly compares life to a journey without using "like" or "as," which characterizes a metaphor. In this case, life is described as a journey to suggest that it involves various experiences, challenges, and changes along the way, much like the path one takes on a journey. This comparison evokes deeper understanding and connection to the idea that life has a direction, purpose, and is filled with different phases.

The other options employ different figurative language techniques, such as personification, which attributes human characteristics to non-human entities, or simile, which makes a comparison using "like" or "as." While they all convey vivid imagery and emotions, they do not represent a true metaphor, which is defined by a direct comparison that asserts one thing is another.