Which picture is different and why?

It's a SQUARE

The paper is different because it has square shape. The clock, the plate and the balloon are round (have round shape).

I can see THREE PEOPLE.

I can see A PERSON.

I can see a PLATE

I can see FIVE CHILDREN.

It's round.

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.

I can see three LEAVES.

The cloud is different because it's not an animal. The cow, the sheep and the goat are animals.

The doctor in picture 2 is different because she is a woman. The teacher, the farmer, the driver are men.

I can see a LEAF

I can see A CHILD.

I can see a FARMER.

I can see A MAN.

I can see TWO MEN.

I can see a (bus) DRIVER.