Final answer:
Piaget's preoperational stage is marked by limitations including a lack of understanding of conservation and egocentrism, which impacts children's logic and perspective-taking.
Step-by-step explanation:
The limitations in Piaget's preoperational stage, spanning from ages 2 to 7 years, primarily involve children's inability to perform mental operations due to a lack of understanding of the conservation principle and logical reasoning.
For instance, preoperational children may incorrectly believe that dividing a pizza into more pieces means there is more pizza, because they do not yet grasp that altering an object's appearance does not change its quantitative properties. In addition to conservation, children in this stage also exhibit egocentrism, which is the inability to understand perspectives other than their own.
This can be seen in cases where a child selects a gift based on their own preferences rather than considering what the recipient might like.