According to the Impact / Society box, “Average Time Americans Spend Using Mass Media Each Day,” how many hours per day does the average American spend with the mass media?

Which type of camera often features a single body and interchangeable lenses?

A. compact B. disposable C. mobile phone D. digital single-lens reflex (DSLR)

Which statement about the tourism industry is true?

a. Tourism accounts for one-fourth of GDP in the U.S. b. Tourism is the largest industry and employer in the world. c. Tourism has grown slowly since the economic recession. d. Tourism is a key source of revenue in developing countries.