Answer:
Truthfulness
Step-by-step explanation:
A credible news organization is an organization that conveys truthful, verified information, ideally without biases. For example, Reuters is one of the most credible organizations because they do not editorialize information: they simply convey it as it is.
Negative news should not be used to promote hidden agendas against something or someone, because if the agenda is discovered, the credibility of the news organization will take a hit.