Nadia is writing a report about the increase of cell phone use in the United States.
Which source is the most reliable?
1. An online article that includes a recent study by a well known American university
2. An online news article titled “Get Off the Phone” published by an organization called NoPhonz
3. An online article titled “Making More Calls” written by Jane Smith, the owner of a cell phone company
4. A personal Web site about cell phone use that contains articles, charts, and graphs but no bibliography