Question

Suppose you are researching the effect of screen use on students. Which source is not credible? an article by a college professor, published in a scholarly journal this year, about a study on the effects of screens on academic performance a blog post from five years ago by a group of parents offering opinions about their children’s screen use  a newspaper article published last year reporting on a study about the effects of screen use on students a magazine article published this year about the difference between students using apps for learning and students watching videos for fun

Answer 1

A blog post.
This is because it is is not necessarily verified and the parents are most likely biased against phones. Additionally it was published 5 years ago so is likely not as accurate since technology is constantly developing.