Answer:
Biased information is a persons personal opinion in something like a essay.
Biased information could be credible, but it is strongly recommended not to be used because it is just somebodys opinion.
Explanation:
Macbeth knows that Macduff's loyalties don't lie with him, this makes him angry and so he sends his murderers to kill Macduff's family.
The answer would be the first one