Answer:
Fear Appeal: Fear appeal is a marketing technique centered around invoking fear in the individuals who refuse to adopt the messages or recommendations given by someone.
Example Of Fear Appeal:
For example, let's say a company is trying to sell door locks. By using fear appeal their marketing might look something like this:
"Our door locks are the best defense against intruders. If you don't buy our locks you might as well say goodbye to your safety."
It uses an if/then approach. "If you don't buy/use our product, then something bad might happen.
Second part: It is extremely important to know the reliability of a website. Information can be easily fabricated. Leaving a gullible person in a bad situation. In addition, reliability also relies on frequent updates to the media. Discoveries are happening all the time, so it doesn't take long for an article to be out of date, therefore leaving the information presented to be incorrect.
I hope this helps :)