Fill out the blanks: ( ) refers to how well a model represents reality whereas ) is the process of ensuring that a model is accurate and free from logical errors. It is impossible to include every detail of real life in one model. To add more realism to a model generally requires more complexity and analysts have to know how to balance these. Analysts must pay careful attention to the assumptions made when building models and developing spreadsheet formulas. Select one: . verification, validity b. verification, value C. validity, verification d. value, verification