It is biased, with blanket statements that cannot be proven related to cell phones.
Explanation:
The paragraph presented states that the cell phone was the best invention of the twentieth century, but the author does not show anything that proves this information. in addition, the author states that most people no longer use landlines, but again, it shows nothing that confirms this information. All statements are based on the author's convictions, so we can conclude that this paragraph is biased, with general statements that can not be verified.
