Concept:The poem "The Road Not Taken" was written by the American poet Robert Frost.Explanation:Robert Frost published this famous narrative poem in 1916 as the opening piece in his collection Mountain Interval. The poem is written in four stanzas of five lines each, using an ABAAB rhyme scheme and iambic tetrameter. It is one of Frost's most recognised works, often interpreted as a reflection on choice and individuality.Answer:Option C – Robert Frost.