Прочитайте текст и выберите правильный ответ: The world of outdoor advertising: billboards, transport and ‘street furniture’ (things like bus shelters and public toilets)—is worth about $18 billion a year, just 6% of all the world’s spending on advertising. But it is one of the fastest-:growing segments, having doubled its market share in recent years. What does the number 6 refer to?
- To the number of ‘street furniture’
- To the market share of outdoor advertising
- to the percentage of all the world’s spending on advertising
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