How can Karel count the number of beepers it collects?

To count the number of beepers Karel collects, using a counter variable that increments with each call to pickBeeper() is the most effective and straightforward method. This approach allows Karel to maintain a dynamically updated tally of collected beepers.

When Karel successfully picks up a beeper using the pickBeeper() command, the counter variable can be increased by one, providing a direct correlation between the number of beeper collections and the counter's value. This method is efficient because it requires minimal coding and utilizes basic programming concepts like variables and incrementation.

Other methods, such as creating a list of all collected beepers or using a display on the grid, can be more complex and require additional resources. A list could complicate the process as it involves managing multiple entries and would not inherently serve the purpose of counting without additional logic. A display on the grid might also not be feasible in every environment or scenario where Karel operates, thereby limiting the practicality of that option. Limiting the total number of beepers collected is not a counting method; instead, it restricts Karel and does not provide a count of how many have been picked up.

In summary, employing a counter variable that increases with each beeper picked up offers