Answer:
A. He concludes by stating that representatives from all thirteen colonies support the document.
Explanation:
They should both restate the claim. Your conclusion could have a Call To Action which tells the reader that you are giving a reference to him/her.
A conpound-complex sentence is two subordinate clause,independent clause. sentences joined with a coordinating conjunction
example: Since I had time,I went to the store,and when I returned,I out the groceries away.
Answer:
To the answer number 1, i think it's, a.