Under Jean Piaget's Theory of Cognitive Development, when closely analyzing the psychological dynamics and essential mental abilities developed in children during the 'Concrete Operational Stage' (approximately 7 to 11 years)—such as conservation, decentration, classification, and seriation—which of the following statements is most authentic and scientifically true?

According to Jean Piaget's theory of cognitive development, during the 'Concrete Operational Stage' (approximately 7 to 11 years), a child begins to engage in logical thinking, but this thinking is limited to direct or concrete objects. The main characteristics of this stage include conservation, decentration, classification, seriation, and reversibility. The development of abstract thinking occurs in the next stage, which is the 'Formal Operational Stage'.