According to Piaget, children develop through a series of stages that:

lead all children to the final and most advanced stages of logical thinking.
are unpredictable and unique to each child.
are unpredictable, but nevertheless lead to the most advanced stage.
can be molded through systematic intervention.
are predictable, but some children never obtain the most advanced stages.

And your answer is?

According to Piaget, children develop through a series of stages that are predictable, but some children may not reach the most advanced stages. Piaget proposed that there are four main stages of cognitive development: sensorimotor, preoperational, concrete operational, and formal operational.

1. The sensorimotor stage (infancy, from birth to about 2 years old) is characterized by children experiencing the world through their senses and actions. At this stage, they develop object permanence and begin to understand cause and effect relationships.

2. The preoperational stage (early childhood, from about 2 to 7 years old) is marked by the development of symbolic thinking and language skills. Children in this stage have egocentric thinking and lack the ability for logical reasoning. They often struggle with understanding conservation and have difficulty understanding another person's perspective.

3. The concrete operational stage (middle childhood, from about 7 to 11 years old) is characterized by the development of logical thinking and the ability to perform mental operations. Children become capable of conservation tasks and understand simple mathematical concepts. However, abstract thinking is still challenging at this stage.

4. The formal operational stage (adolescence and beyond, from about 11 years old onwards) is the final stage of Piaget's theory. During this stage, individuals develop the ability for abstract reasoning, hypothetical thinking, and deductive reasoning. They can think logically and systematically about hypothetical situations and engage in scientific reasoning.

It is important to note that while Piaget's stages of development are generally applicable to most children, there can be individual differences in the rate and extent of development. Some children may not progress through all the stages, or they may reach the final stage of formal operations more slowly than others.

In summary, Piaget's theory suggests that children develop through predictable stages, but not all children may reach the most advanced stage of logical thinking.