As it is pointed out in the passage, advertising in this age----.

The advertising techniques and methods used today
were for the most part devised in Britain, Europe and
America, and as a new technique evolved in one
country it was quickly taken up elsewhere. The
practice continues on a worldwide scale. The
simplification of the words and illustrations in
advertisements has come about as the result of the
skill of copywriters, artists and photographers
combined with the findings of advertising research
workers. Advertisers have found it is often more
effective to concentrate on putting across one aspect of
their product than to go into lengthy descriptions. They
have seized on the truth of the saying that a picture
can be worth a thousand words. Some critics of
advertising have argued that an advertiser should be
content to furnish the public with information about his
product and draw the line at persuasion, but in
practice the dividing line between informing and
persuading is impossible to draw. Persuasion starts
at the point where information is first supplied,
particularly when, as must happen for reasons of
space and time, the information given is selective