The correct answer is: D. All of above
A trigger is an event that causes an action to happen. In the context of animations, a trigger can be an action button that advances to the next slide, an item on the slide that performs an action when clicked, or the name of a motion path.
An action button is a button that can be used to perform an action, such as advancing to the next slide or playing a sound. When an action button is clicked, it triggers the associated action.
An item on a slide can be a text box, an image, or any other object. When an item on a slide is clicked, it can trigger an action, such as playing a sound or opening a web page.
A motion path is a path that an object follows when it is animated. The name of a motion path can be used as a trigger to start or stop an animation.
For example, you could create an animation that causes a text box to move across the screen. You could then trigger the animation by clicking on an action button. Or, you could trigger the animation by clicking on the text box itself.
You could also use the name of the motion path as a trigger to start or stop the animation. For example, you could create a button that says “Start Animation”. When the button is clicked, it would trigger the animation named “Text Box Move”.
Triggers can be used to create a variety of effects in your presentations. They can be used to control the timing of animations, to create interactive presentations, and to add interest and excitement to your slides.