What is a primary function of the ballsPresent() condition in the Cleanup Karel example?

The primary function of the ballsPresent() condition in the Cleanup Karel example is to determine if Karel needs to take any action. This condition checks whether there are balls present in Karel's current location, which directly influences Karel's next move. If balls are detected, Karel can perform the action of picking them up, effectively allowing the program to respond dynamically to the environment. This conditional check is integral to ensuring that Karel only engages in cleanup activities when necessary, thus streamlining its operations and enhancing efficiency. By using this condition, Karel avoids unnecessary actions when there are no balls to clean up, ensuring that the program operates effectively within its defined task.