Answer:
Independent Clause: Poetry is a structure of writing.
Dependent Clause: That has many possibilities.
Explanation:
An independent clause is a sentence fragment that can stand on its own you can walk up to someone and say "poetry is a structure of writing", but you can't just say "that has many possibilities" you need context on its own it doesn't make sense, you could say its dependent on another clause to make sense.
Hope my explanation can help you understand better for the future.
In scene 1, Hamlet (the main character of the play) was so upset about his father's death. But then his friends tell him that they've been visited by the ghost, Hamlet plan to come tonight. Then later that night, once again ghost had come to them. The ghost wants Hamlet. His friends tried to stop him from follow the ghost but he resist to find out what the ghost want from him. Hamlet just find out that ghost is actually his father! And what's more disturbing is that Hamlet's father was murdered by his brother, King Claudius! Hamlet swears to his father that he'll get his revenge for him. Now we (the audience) know now that the ghost is really Hamlet's father who've been killed. But Horatio, Barnardo, and Marcellus don't know who the ghost really is. I hope this helps.
A compound
hopefully that helped ;)<span />