Answer:
B. advertising.
Step-by-step explanation:
A magazine can be defined as a written document published periodically to provide informations about a particular subject or field. An example is the Marketing News magazine.
Marketing News is a magazine from the American Marketing Association and it covers all aspects of the marketing industry, which is mainly read by academics and people working directly in marketing.
Magazine publishers are mainly dependent on adverts posted on their pages to generate revenues for the smooth running of their business.
Hence, half of the income for magazine publishers comes from advertising.
Basically, organizations and business firms submit their products or services to a magazine company for the purpose of promoting their business through advertising.