What action is performed in the 'makeTower' function?

The 'makeTower' function is designed to have Karel build a vertical stack of balls. When the function is executed, it typically involves a loop or a series of commands that direct Karel to place multiple balls one atop the other, creating a tower-like structure. In this case, the correct action indicates that Karel puts down three balls in a vertical sequence. This action reinforces the concept of using loops and conditionals to control the robot's behavior and manipulate the environment effectively. Constructing a tower demonstrates Karel's capability to perform repetitive tasks efficiently, which is a fundamental skill in programming and robotics.