Which of the following psychological statements is most authentic and scientifically valid regarding the real psychological implications and scientific management of students' cognitive structure, cumulative learning, and logical development in classroom teaching regarding 'Spiral Curriculum'—a very important and central concept propounded under Jerome Bruner's 'Discovery Learning Theory', defined as that educational and curriculum framework under which basic concepts and difficult principles of any subject are presented in a very simple and concrete form suited to the age, mental maturity, and cognitive level of children at the primary educational level, and as students progress to higher classes, the same subject or concept is repeatedly taught in greater depth in a more detailed, complex, logical, and abstract form?