Easy, none of them are undefined. Just click next

Middle and bottom right.

They’re the only ones that aren’t a bridge, a car, a motorcycle, a bike, a traffic light, stairs, a bus, a crosswalk, or a fire hydrant.

‘undefined’ is such a mood.

All of these images show defined objects, so don’t select anything and hit verify. You would know this if you were actually human. 😌

Click the headphones button.