Final answer:
The final stage in problem solving is typically known as the conclusion or resolution phase, where the results are evaluated for their significance and reasonableness, and conflicts or issues are resolved.
Step-by-step explanation:
The final stage in problem solving is often referred to as the conclusion or resolution phase. In the context of physics, which is often related to solving numerical problems, it is not only about getting the answer but also about ensuring that the solution makes sense in the physical world. The conclusion involves writing a thoughtful closing remark about the hypotheses in terms of the given problem, double-checking the answer's reasonableness, and understanding the significance of the result.
In other contexts, such as in narratives or policy-making, this final stage may be addressed as resolution or dénouement, which signifies the point where all the loose ends are tied up, and conflicts are resolved. In most cases, it leads to a state where things return to normal, or a new equilibrium is established following the changes incurred during the problem's lifecycle.