Answer:
The graphical elements differ in Melody because:
C. Its punctuation splits the poem into two complete thoughts.
Step-by-step explanation:
The three poems have much in common. They all present a type of introductory sentence describing some natural phenomenon. That natural phenomenon leads the speaker to think of some aspect of the person to whom the poem was written - their appearance, their voice, their warmth.
The main difference between them is caused by the punctuation in "Melody". In the other two, "Luna" and "Cold", the sentences were joined to form a subordinate structure. The first sentences begin with the subordinating conjunction "when", and the second sentences come after a comma. The sentences are connected in such a way that one depends on the other. However, in Melody, we do not have the conjunction and the comma. The sentences are separated by a period, expressing two complete thoughts. For that reason, the best option to answer this question is letter C.