Question

which source is the most valid and credible?
○ an article by an author that has worked with the subject for 30 years
○ an article published without a peer review
○ an article that uses citations from outdated sources
○ an article that uses emotional language when describing a topic

Explanation:

An author with 30 - year experience on the subject is likely to have in - depth knowledge and expertise, making their article more reliable. Peer - reviewed articles are generally more valid, so an article without peer review is less so. Outdated citations can make an article less relevant and credible, and emotional language can introduce bias and reduce credibility.

Answer:

an article by an author that has worked with the subject for 30 years