Answer:
C. credible
Step-by-step explanation:
A credible source is an information source that is unbiased, trustworthy and reliable. Also, a credible source is typically backed up by evidence from various information channels and should be accurate.
In order to validate a credible source, it is necessary to ensure that the information provided is checked against other reliable sources to verify its level of accuracy.
As a rule, any credible source should have multiple ways to validate the informations being presented.
Hence, when researching a topic, it is important to use sources that are credible so as to avoid peddling fake, unreliable, false and unfounded informations.