Questions I Got Wrong

I got 23/25, here you can see my score.

Here is one of the questions I got wrong. Now I realize that the answer I chose generates the customers who bought any product, not specifically the AA batteries, which is what the question calls for.

Here is the second question I got wrong. Filtering by photographer will remove any entries with unknown photographers. Filtering by year will remove any entries with unknown years. Sorting by year will sort the remaining entries in column C from least to greatest, putting the photograph with the lowest year value in the first row of the spreadsheet. Therefore, it is not needed to sort by subject.