The answer is A. By dependent marker do you mean dependent clause?
That no matter who it is, the United States is willing to help those countries have equal rights for everybody
It's really important to know your audience when you start writing something. For example, if you want to write a dystopian novel, usually teens and young adults read such books, so you want to modify your novel and theme a bit to better suit their interest and understanding. You need to decide on which group of readers you want to write for so that you can adjust themes, motifs, characters, etc.
Strict teacher way in educating his student