Which picture is different and why?
The cloud is different because it's not an animal. The cow, the sheep and the goat are animals.
Which picture is different and why?
The horse is different because it's an animal (it's a living thing). The bike, the motorbike and the car are not animals. They are machines.
Which picture is different and why?
The paper is different because it has square shape. The clock, the plate and the balloon are round (have round shape).