When developing criteria, it is important to consider all aspects of the problem and its potential solutions. Among the options you've provided, the best approach would be:
Explore the possibilities with regards to circumstances after the problem has been solved.
This approach involves looking forward and considering the implications of the solutions, ensuring that the criteria you develop are not only applicable to the current situation but also relevant to future scenarios. It's essential to keep an open mind and consider how the problem may evolve over time, as well as how the solutions may impact future developments.