What should you do if Karel encounters a wall while moving?

When Karel encounters a wall while moving, the most logical approach is to consider different routes to navigate around. This means that Karel should be programmed to recognize the obstruction and then determine alternative paths that can be taken to continue its task.

In practical terms, this could involve checking for openings or other ways to move around the wall, thereby allowing Karel to complete its objective without being stuck. Thinking creatively about alternate routes is essential in programming Karel to handle obstacles effectively, employing problem-solving skills to navigate its environment.

By contrast, programming Karel to simply turn around or check for adjacent walls might not provide a comprehensive solution to the problem of a wall in its path. Meanwhile, preventing Karel from moving forward does not address the need for dynamic navigation in a real-world scenario where walls can be encountered frequently.