Just finished uploading mine. I chose to answer the first question, something that happened recently that changed my worldview. I used talked about a professional issue that had substantial overlap with a personal issue for me.
What I've been told by friends who are there now is to avoid talking about the pandemic, because they feel most people might do that and they'll be pretty similar.
Personally, I'd go with a personal answer, it will provide a different context (they already know about you professionally through your essays, resume, recs, and interview) s best to shine another light on things.