When analyzing the essential and psychological dynamics of 'Hypothetico-Deductive Reasoning' and 'Abstract Thinking' that develop in children during the 'Formal Operational Stage' (approximately 11 years to adulthood) under Jean Piaget's Cognitive Development Theory, which of the following statements is most authentic and scientifically true regarding the most important intellectual characteristic of this stage?

According to Jean Piaget's theory of cognitive development, the Formal Operational Stage is the final stage of cognitive development, starting from approximately 11 years of age and lasting into adulthood. The main characteristic of this stage is 'Hypothetico-Deductive Reasoning', under which adolescents adopt a scientific approach; they first formulate various possibilities or hypotheses to solve a problem and then logically and systematically test them to draw conclusions. In addition, they become capable of successfully thinking about abstract ideas, future plans, and philosophical issues.