When comparing the usage of the Internet as a news source to television, newspapers, and radio, the Pew Research Center has discovered what trend over the last decade?

a. Internet usage has grown continuously, while all other sources have declined.
b. Internet and television usage have grown, while radio and newspapers have declined.
c. While television remains strong as a news source, all other sources have declined slightly.
d. Radio has grown as a news source as the population has aged, leaving all other sources behind.

Answer: a