The clue word "however" almost always indicates a "contrast". This is because when using this word, the writer can on one hand agree with what he or she is saying, but offer a different point of view to be considered.
I believe it is A. It talks about forging a new nation so A seems to be the best answer.
This question is completely up to your personal experiences, and therefore I can't answer it unless I know you personally.
But I will give an explanation to what prejudice is so you can answer your question yourself.
<em>Prejudice is somewhat similar to discrimination, where you judge people based on what group they belong to (etc. race, gender, sexuality) without reason. Something similar to racism. People can be prejudiced because they belong to any group.</em>
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I hope you can answer the question well. :)
The answer is the 4th one
From what i know B is going to be the best one of these options