Which type of source would be considered the least credible for researching recent identity theft trends?

an interview with a professor on a university’s website
a personal story featured on an individual’s blog
an in-depth study featured on a government website
an article on the wall street

The correct answer is B. A personal story featured on an individual's blog

Explanation:

The credibility of a source refers to whether the information of a source can be trusted or believed. In general terms, the credibility is determined by the date of the source, considering all sources might contain outdated information; the web page or document in which the source appears considering some web pages including government pages follow a strict process of revision before including any information; the author of the source, because a reputable expert in the subject is usually more credible and the evidence the author provides to support the ideas.

Considering this, if someone is trying to find a credible source to research recent identity theft trends the least credible source would be "A personal story featured on an individual's blog" because this source is not written by an expert on the subject, probably does not provide evidence as it is based on personal experiences and the web page in which it appears is not credible as most blogs do not have control over the information users add, therefore the information of this source cannot be trusted or believed which makes this source lacks credibility.

im not sure about this one