The correct answer is D. Be extra careful to look for biases.
News from online sources such as blogs and message boards are inevitably biased since they reflect the individual authors' opinions, interpretations and points of view. Since opinions are subjective and vary from person to person, they are full of biases. Therefore, it would be wiser to obtain news from less biased sources such as national newspapers or news channels that report news as it is instead of reporting it in a way that reflects a journalists or news reporter's point of view.
It's different because in a information text main idea there isn't any opinion on it just straight up facts but with persuasive it includes how you feel on the topic/situation...etc. To sum it up Persuasive deals with your personal feelings and Informational doesn't.