Answer:
Pre-operational stage
Explanation:
The pre-operational stage is the second stage of Piaget's cognitive development stage. This stage has been started from the age of 2 to 7. At this stage, children start to think at a symbolic level but not yet using the cognitive level. Children used at the pre level or before the operation. This means that children are not using the logical level to combine or separate things. The child development consists of building experience about the world through adaptation and working towards the stage when it can use logical thought. During the end of this stage, the children can mentally represent events and objects and involve in symbolic play.