Before selecting a topic or starting your research, make sure you understand your assignment. Consider:
Have you been assigned a topic or can you pick your own?
How many pages/words do you need to write? How long is your presentation?
Do you need to include specific types of sources (e.g. scholarly journal, book, etc.)?
When is the assignment due? How much time do you have to research?
Is currency of information important?
When in doubt, consult with your instructor.