Answer:
the 4th one trust me ik !!!!!!!
They are probably the most important document in understanding history. Without writing we would have a difficult time understanding archeological data. Also journals give great detail about wars and other major conflicts that would otherwise be unknown to historians.
The Answer Would be with a couplet Becuase in his sonnet it is clearly placed with a rhythmic tone and those to lines end with a couplet.
Hope this helps