How can you make Karel turn around?

To make Karel turn around, it can effectively be accomplished by having Karel turn left twice in succession. The command "turnLeft()" changes Karel's direction 90 degrees to the left. Therefore, if Karel is facing north and executes "turnLeft()" once, it will face west. A second call to "turnLeft()" will turn Karel to face south. Thus, after two left turns, Karel will be facing directly opposite its original direction, which constitutes a complete turnaround.

In Karel's programming context, there isn't a dedicated command like "turnAround()" provided in the options, meaning that the solution depends on manipulating the existing commands effectively. Additionally, moving backwards does not change Karel's facing direction; it simply moves Karel in the opposite direction it's currently facing. Hence, utilizing two left turns is the most straightforward method to achieve a turnaround.