Answer:
a. he consults well-known, credible sources in his research.
Explanation:
The attempt to be objective is trying to search for as many sources as possible, experts in the matter and trying to portray both sides of the story, this way objectiveness can be achieved, by writting and consulting credible well-known sources is part of that job.
<span>B. During the period of Viking, Magyar, and Muslim invasions</span>
??? no entendí nada que idioma es ese
Pamplets, writings, that sort of stuff
