Meera folds a square sheet top half down onto the bottom half and then left half over onto the right half. She punches a triangular hole pointing up and a round hole. Which figure shows the sheet when it is opened?

Undo the folds in reverse. Opening the left-right fold mirrors each hole across the vertical centre line (a triangle pointing up stays pointing up). Opening the top-bottom fold mirrors all of them across the horizontal centre line, so the copies in the top half point down. That is (c).