Image 1: This is an obvious figure relationship because the sign or in this case the store really stands out thanks to the background it has.

Image 2: This is an ambiguous figure-ground relationship because this part of the car not only stands out but also show a reflection of the buildings in the background.

Image 3: This is an ambiguous figure-ground relationship because the stairs have the very suspicious aura in looks, gives the vibe would you want to go down them or not? Many answers to this to what you see in this image, and I can see this being a very concerning scene for just an image.

Image 4: This is an obvious figure relationship because these plants are the only focus in this image and the only thing there.

Image 5: This is ambiguous figure-ground relationship because this station shows not just the help service poll but background of the rest of the station and people walking around.

Image 6: I’d say this is a obvious figure relationship because mostly focused on the train in this image, and lights coming from it make it appear and shown more than everything else