At least a solid third of the questions I wanted to check multiple boxes and a lot of it is context dependent or some terms are more specific than other terms but both work.

Rotary/roundabout

Yard sale/tag sale/garage sale

semi/semi truck/semi trailer/tractor trailer

sneakers/gym shoes

I suspect they didn't have a large enough sample size to allow multiple selections while still having the desired accuracy so they force you to pick something.