Narrowing Your Topic

You could narrow the topic of marketing even more by adding a sub-topic.

Marketing
	an age group	marketing to adolescents
	a location	marketing in Japan
	an additional topic	marketing in magazines
	a population	marketing to minorities or women

It is helpful to write out your topic as a sentence or a question. Let's say the question that most interests you is:

How do advertisers market their products to women?