The author uses firsthand evidence to support the argument by
a. Contrasting a personal anecdote with current technology to show how times have changed.
b. Discussing a humorous experience with older technology to show how much better things are now.
c. Nothing similarities between his past behavior and contemporary trends to show how the world is essentially the same.
d. Appealing to readers' sense of pathos by recalling a time when he used older technology.
