Do a quick preliminary analysis, and take the time to answer who, what, when, where (jurisdiction), why, and how.
Further questions can help keep you organized and limit your work.
Clarify your Questions
Keep a detailed record of what you researched, what you found, and how long you spent on that issue. This is especially helpful when your entire work product is mostly an explanation of how you spent your time.
One great way to back up your answer to these kinds of questions is to provide a summary of your research log.
Your research is more credible—your employer will be more confident in your final answer—if you show clearly that you checked authoritative secondary sources and thoroughly reviewed relevant primary law.
Ask your supervisor for recommendations on particular treatises or practices guides, or use a research guide from a law library. Types of secondary sources include: Legal encyclopedias, Law reviews, ALRs, Treatises, Practice guides, Looseleaf services, and others.