C. Conversation is the synonym of discussion.
Persuasion is defined as the act of trying to convince someone of something, or the means of convincing someone to do something. When someone lists all the reasons why you should do something, this is an example of persuasion.
Answer:
Primary sources are documents, images or artifacts that provide firsthand testimony or direct evidence concerning an historical topic under research investigation. ... The same document, or other piece of evidence, may be a primary source in one investigation and secondary in another.
