Answer:
Option C: the act of using others' ideas without proper documentation or by paraphrasing poorly.
Step-by-step explanation:
Plagiarism is simply the use of someone's own work, content or research and taking it as your own without acknowledging the owner or author. It is reproduction of someone else's work without proper reference or attribution. It involves passing it off as one's own. The research on others ideas is not bad but when you commit the act of using others' ideas without proper documentation or by paraphrasing poorly is plagiarism.