The following is missing for the question to be complete:
A. Formal operational thought
B. Invincibility thinking
C. Metacognition
D. Concrete operational thinking
Answer: A. Formal operational thought
Explanation: One of the stages according to Piaget is formal operative thought, a phase that is characteristic of the adolescent period. This phase begins at about age 11-12 and lasts into the adult state. With this stage, that is, with this stage of thinking, adolescents begin to develop and use abstract thinking, to manipulate facts and ideas, and, above all, to manipulate these ideas in their minds. Therefore, it is about developing the ability to manipulate ideas even though there is no real manipulation in reality, that is, there is no concrete realisation in the reality of such ideas, not always. In addition, they develop deductive reasoning, logical thinking and reasoning, and it starts with some kind of planning and systematic planning.
