JavaScript Question of the Day Jan. 31, 2025

Consider the following program:

function main() {
    let ball = createCircle(50, 200, 100, "green");
    // CODE GOES HERE
}

function createCircle(radius, x, y, color) {
    let circ = new Circle(radius);
    circ.setPosition(x, y);
    circ.setColor(color);
    add(circ);
    return(circ);
}

function changeBall(ball) {
    ball.setColor("red");
}

main();

Which option below, when entered on line 3, will result in a red ball added to the canvas?

1. Correct Answer
   Incorrect Answer
   a

   changeBall();

2. Correct Answer
   Incorrect Answer
   b

   changeBall(ball);

3. Correct Answer
   Incorrect Answer
   c

   ball.changeBall();

4. Correct Answer
   Incorrect Answer
   d

   Implementing options A or B would result in a red ball.