Final answer:
Marketers first introduced the personal digital assistant (PDA) as agents of change because it brought about a significant cultural impact.
Step-by-step explanation:
When marketers first introduced the personal digital assistant (PDA) to the American consumer, they performed the role of being agents of change because the cultural impact of the product became widespread. Marketers were responsible for introducing and promoting the PDA, which brought about a significant change in the way people organized and managed their information.