Several of these questions are opinion, so I can't really help with those, but I can answer the first one.
After World War I, the League of Nations was created to try to help keep the peace and solve problems between nations. The same went for the United Nations after World War II. There were also the treaties that ended the wars. (You'll have to decide whether or not these were actually successful.)
An appositive or appositive phrase is a noun or noun phrase that renames another noun right beside it.
For example:
"The insect, a cockroach, crawled across the table"
Therefore the only answer can be the first option.
Your answer should be c. PLSSSS MARK ME BRANLIEST
