What is a good marketing problem I can research in my marketing class?

In my marketing class, we all have to pick a marketing problem and do research. We have to follow the format on how to conduct the research also. What would be a good topic for me to choose? My topics of interest is finances, future career(s), and sports.What is a good marketing problem I can research in my marketing class?
You can do something along the lines of "how do tobacco companies attract new users even though they have a negative consequence?" Also, look at how tobacco companies sponsor the ads that say that tobacco is bad.