Man.... I know this, I learned it last year.... PRIMARY yeah its primary. A primary resource, isn't a website or anything, its something that is a reliable and definite source.
He divided his studies between music and commercial art, and by 1918 established a reputation as a bandleader and agent. In 1923 he went to New York City and soon became a successful bandleader. In 1927 he secured an important engagement at the Cotton Club in Harlem, a section of New York City, and remained there (aside from occasional tours) until 1932.Ellington's band made its first European trip in 1932. After World War II (1939–45), the band toured Europe regularly, with short trips to South America, the Far East, and Australia. One peak period for the band was from 1939 to 1942, when many critics considered its performances
C) A modern newspaper is printed many more times than previous newspapers--and still is relatively cheap to buy.
The text says
"Johannes Gutenberg made the earliest printing press, as we know it today, around 1450. These presses used movable type to create many pages of news faster and more easily than any other process. "
So the answer to the question (What can the reader infer the author means when he says that newspapers were not truly modern until after the invention of movable type?) is
C.
I will look forward to hearing from you.