What is the result of trying to put a beeper when Karel’s bag is full?

When Karel's bag is full, the action of trying to put down a beeper fails because Karel has reached its maximum capacity for beepers inside its bag. The programming rules dictate that Karel can only place a beeper if there is room available in its bag to accommodate it. Since the bag cannot hold more than its designated limit, the attempt to put down a beeper results in Karel being unable to perform that action.

The correct choice aligns with the fundamental mechanics of the Karel programming environment, illustrating how resource management works within the confines of Karel's abilities. This limitation ensures that students understand the importance of managing Karel's state and resources effectively in their programs.