When a transition is applied to a slide how is it visible to the user? a. a play animation icon appears on the slide b. a numbered box appears next to the thumbnail c. a play animation icon appears next to the thumbnail d. a numbered box appears on the slide

C. A play animation icon appears next to the thumbnail.

In Microsoft Powerpoint when a slide has a transition applied to it, a play icon appear next to the thumbnail of the slide. The play icon will appear to be a Star. If the user clicks the star next to the thumbnail, the transition of the slide will then be played for preview. The user can also apply different types of transitions for each slide.