In MS PowerPoint the option used to change slides when clicked with the mouse is found under

The setting that controls whether a slide moves forward when the mouse is clicked is placed under the Transitions tab in PowerPoint. This feature allows presenters to decide if slides should advance automatically after a set time or only when manually triggered. It provides flexibility in delivering talks or lectures. Knowing where this option exists is important for making professional presentations. Since the control is in the Transitions menu the correct choice is option C.