Final answer:
Robert Frost's poem 'The Road Not Taken' discusses the impact of choices on life and the uncertainty that comes with them. The themes suggest that every decision shapes the journey of life, yet there's an ambiguity about what the outcome may be.
Step-by-step explanation:
Robert Frost's "The Road Not Taken" explores several key themes. One of the central themes is the significance of choices in shaping a person's life. Through the metaphor of a fork in the road, Frost conveys the idea that decisions can lead to different outcomes and are integral to the journey of life. Another theme evident in the poem is the inherent uncertainty and ambiguity that accompany making choices, as the speaker reflects upon the road he took and how it has 'made all the difference.'
The narrator's sigh at the end of the poem may suggest a sense of wonder or contemplation about the choice made, whether it be with a sense of content or a hint of regret. By expressing that both paths were 'equally lay,' Frost emphasizes the complexity and unpredictability of life's decisions.