A panel may ask about a weak grade, employment gap, course mismatch, limited work experience, rejected university application, or a career plan that sounds too broad. Do not panic. The safest answer is honest, concise, and forward-looking. Explain the fact, what you learned, and how your current preparation addresses it.
Do not blame everyone else. A mature answer can mention context without avoiding responsibility. For example, if your grades dropped during one semester because of family or financial pressure, you can explain briefly, then point to later recovery, stronger research work, professional performance, or other evidence of readiness.
If you do not know an answer, it is better to say so carefully than to invent details. You can say, 'I have not worked directly on that policy instrument yet, but my understanding is...' and then answer from what you do know. Panels usually prefer thoughtful honesty over confident misinformation.