HOTSPOT You open powerbi.com as shown in the following exhibit. 
SALE and INSURANCE. Seen this setup in official guide practice and the classification tag is always up top by the report name, not above the Q&A fields. If you're prepping, screenshots like these in labs are super helpful for tricky UI questions.
Not sure why some folks are picking INSURANCE as the classification. The tag right by the dashboard title usually marks classification in Power BI, so I think that part's SALE. INSURANCE looks like the dataset for Q&A but it's easy to swap them.
Looks like the tag next to the dashboard title is "SALES," so that's probably the classification. The Q&A section shows "INSURANCE" at the top, which should be the dataset name. I think it's easy to mix those up at a glance, but that's how it lines up in similar Power BI interfaces I've worked with.
