The last one.
Create a bibliography so you can make sure you've cited sources correctly.
Answer: here your answer
Explanation: Providing evidence as part of your arguments in a discussion helps your statements and claims to be more than opinions, but instead, such arguments are turned into facts, that can not be debated and can help you support the way you present your ideas in a discussion.
Answer:
Censorship is removing or censoring what someone said. So I would say no.