In S, A, and M modes, a blinking question mark appears at the bottom of the display to indicate that if you press the Thumbnail button (located just below the Menu button), you can display a Help screen that provides possible solutions. The camera may, for example, suggest that add you add flash. So, go ahead and click the Thumbnail button to see what solutions are being offered to you and follow the suggested solution to get rid of the question mark from off the display.
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Have a good night.
Well Bari, I am unable to help you any further. I provided the info regarding what you can do to get rid of the question mark. It is your choice whether or not you want to go through with it.
Have a lovely day.