becoming fossils of a bygone age."
Which of these is the best main idea for this excerpt?
Main Idea: Digital communication is the main cause of the drop in demand for the services the USPS provides.
O Major Detail: Americans do not mail cards, letters, and personal correspondence as they have in the past.
Major Detail: Digital financial statements, ills, and checks are increasing each year.
Main Idea: Many banks and organizations are working to reduce their paper usage.
O Major Detail: Most Americans pay at least one bill each month online.
Major Detail: Discounts for going paperless are making paper bank correspondence fossils of a bygone age.
Main Idea: The volume of mail peaked in 2006 because of the increase in the adult population that year.
O Major Detail: Starting in 2007, a dramatic drop in demand sent the USPS over a financial cliff.
Major Detail: In 2002, about 75 percent of all bills were paid by mail.
Main Idea: People have stopped writing letters by hand; instead they use email or social media to connect with others.
O Major Detail: Since 2007, the total volume of all mail has dropped by 25 percent.
Major Detail: Since 2001, the volume of first-class mail has declined by nearly one-third.