Which poem? I would need to see the poem to answer
Answer:
To create the plot of the play.
Explanation:
The original material that Shakespeare used was taken from the story "Un Capitano Moro" written by Cinthio almost 100 years earlier, which tells the story of a very eloquent and honorable black man who became a great general, but who was betrayed by a man who pretended to be your ally. Shakespeare used this as a basis for creating and writing the entire Othelo storyline.
The correct answer seems to be number four - not enough. It both suits grammatically, and sentence-wisely.
