1. The problem asks: What is the last step in mathematical modeling? 2. Mathematical modeling typically follows these steps: - Formulating the problem - Constructing the model - Applying mathematics to solve problems - Verifying and interpreting solutions in the context of the problem - Reporting findings - Refining the mathematical model 3. The last step is important because it ensures the model accurately represents reality and improves based on feedback. 4. Among the options given, the last step is **Verifying and interpreting solutions in the context of the problem**. 5. This step involves checking if the solutions make sense and applying them to the real-world scenario, which is crucial before reporting or refining the model.