Concept:Rhyme scheme is the pattern of rhyming words at the end of lines, labelled with letters.Explanation:Line 1 ends with “stream” and line 3 ends with “dream”, so they rhyme: label a.Line 2 ends with “away” and line 4 ends with “day”, so they rhyme: label b.The pattern is: line 1 = a, line 2 = b, line 3 = a, line 4 = b.Thus, the rhyme scheme is abab.Answer:C. abab