You're Spanish, aren't you? i think that would be correct because a semicolon is for when there are 2 complete ideas in a sentence.
From what i know B is going to be the best one of these options
Hi!
I believe the answer should be: All people should come together to heal the nation.
When writing an essay in English, specifically an opinionated one, a claim is the opinion the writer is arguing for. If you supported school uniforms, your claim would be "I support school uniforms because they reduce bullying." A counterclaim is just the opposite of a claim. If I were making a counterclaim against school uniforms, I would say, "I disagree with school uniforms because they reduce individuality and self expression."