8 .
Which sentence BEST summarizes
paragraph 6?

A. During World War I, postcard
popularity declined sharply because
European printers were out of work
and people did not travel.

B. During World War I, many
postcards were printed in Germany,
and German printers were out of
work.

C. People relied more on the telephone
than postcards for communication
during World War I.

D. The production of postcards slowed
when they Featured a white border
as a way to lower production costs
during World War I.