The research questionnaire was designed with the aim of consulting the experts about their agreement with the model criteria. Thus, experts have expressed their consent through verbal variables such as very low, low, moderate, high and very high. Since different characteristics of individuals affect their mental representations of qualitative variables, so by defining the range of qualitative variables, experts respond to the questions with the same mindset. These variables are defined in the form of triangular fuzzy numbers according to Table 3. Table3. Triangular fuzzy numbers of Linguistic variables