Some tips when choosing a topic:
Interest. Choose a topic of interest to you; a topic that you find boring will result in a boring paper.
Knowledge. You don't need to know much about the subject at the outset. The research process mines new knowledge.
Breadth of Topic. Too broad a topic is unmanageable, e.g. "The History of Universities" or "Computers in Schools." On the other hand, too narrow and/or trivial a topic is uninteresting and extremely difficult to research.
Guidelines.Carefully follow the instructor's guidelines: they should help prevent you selecting an inappropriate topic and/or research methodology.