A carousel is a way to display questions with multiple rows (like a grid or a scale) one at a time. Each row appears as a card, and the respondent answers one card before moving to the next.
The carousel can move automatically or by clicking navigation buttons, and respondents can go back and review their answers. You can also show how many questions are left with a simple count.
This style works really well on small screens like phones and tablets because it shows only one question at a time, making it easier to read and harder to miss any rows.