The correct answer is letter D
The use of the intervention response model (RTI) is a necessary model to ensure that learning difficulties are not the result of an instruction that does not prioritize the skills considered by the literature as predictors for learning to read and write in a system of learning alphabetic writing, this model can assure the teacher, through tutoring, the early identification of the real schoolchildren at risk for reading problems, thus avoiding low school performance and minimizing the false positive result and false negative.