The examples above are major means of communication. Their news gets to the mass. This means to the population in general. News stations and radio stations are part of networks of news which broadcast the latest news all day long through TV and radio. Then ,newspaper and magazines are also part of mass media coorporations and they publish the latest news in the printed medium. The newspaper does it every day; magazines can do so weekly.
It just means that you have to choose one quote, write about a book you've read from that perspective and talk about how it applies to something else you've read. Use details from that book. When I have a question like this I usually just ask my teacher because they know best. Ask your teacher(email because they are always there to help).