Final answer:
The rapid increase in the percentage of American Internet users since 2000 can be largely attributed to the increased accessibility and affordability of Internet services.
Step-by-step explanation:
The rapid increase in the percentage of American Internet users since 2000 can be largely attributed to the increased accessibility and affordability of Internet services. Option c) Increased accessibility and affordability of Internet services is the correct answer. Over the years, advancements in technology, infrastructure development, and competition among Internet service providers have made Internet services more widely available and affordable for people in the United States. This has resulted in a significant increase in the number of Internet users.