create three background questions. These can be three questions based on your three topics, or three questions that all stem from the same topic.
Now, do a self-assessment of each of your background questions:
Does it start with who, what, when, why, where, or how?
Can it be answered with "yes" or "no"? (If it can, rewrite the question or find a new question.)
Is it relevant to clinical practice in your practice area of interest?