Publishers and printing companies are both involved with books, magazines, and newspapers. One type of company is
considered part of the manufacturing section, because it produces the physical product: books, magazines,
newspapers, and so on. What sector does publishing belong to, since it does not produce a tangible product (until
printing transforms it into one)?
O primary, because it makes original content
secondary, because it transforms ideas into physical objects
tertiary, because it provides a service
quaternary, because it involves research