This is pretty straightforward. Just think of items that were important to the pandemic, such as masks or toilet paper.
Think of why they were important: we need masks to slow the virus down so scientists have more time to make a vaccine, and for toilet paper people started hoarding them because why not.
Why do these items best capture this time period of the pandemic? Well, they are the most recognizable items from the pandemic and most important.
Now think of 3 more items that best represent the pandemic. I can't just give all the answers to you; it's kind of an opinion question.
The answer is C because she is sayiong that she has a withering heart which means she is sad so must be cuz she wants a kid because she talks about a child.
I would go with D, as Non-fiction isn't locked to politics or science; It's moreover use to categorize literature (books, etc...) that are based solely on fact.