Read the scenario about Alex. Then choose the best way to complete the sentence. Scenario
Alex is writing a research paper about airbags in cars. Her claim is that airbags only help passengers in auto accidents if the passengers are wearing their seatbelts. She has decided to use the Internet for part of her research paper. After doing a search for airbags, she comes across an article on the homepage of the Department of Motor Vehicles with statistics regarding airbag effectiveness with and without seatbelts. The article is credited to Jake Mitchell, an emergency room doctor from Omaha, Nebraska, and clearly states that airbag effectiveness greatly increases when seatbelts are used. She bookmarks the site and continues to conduct research. Later, she comes across a website called CarStuff. com. It contains a commentary written by an anonymous author that says seatbelts are pointless now that most cars have two airbags.

Alex decides that the (Department of Motor Vehicles/ Carstuff. com commentary) article
is more credible because it (agrees w her claim/was posted online more recently/challenges her claim/provides the name of qualified author.).
.