This function is available on Poll, Open-Ended, Word Cloud, Idea Board, Ranking, Pin on Image, and Rating Scale slides.For quiz slides, use the Manually show correct answers option under the general quiz settings instead. See How to Make and Run a Quiz for details.
Hide results from the Edit view
To hide or show results for all question slides (Poll, Open-Ended, Word Cloud, and Rating Scale) at once, click the Apply on all questions button.