How to reset changes made

I am new to Anki. While looking at options this morning I changed a setting which makes my cards show my question AND answer one side. The reverse shows just the answer. I cannot seem to find how to change this back.
I would be grateful for help to sort this out.

I’ve solved the issue. I was reluctant to make a card type deletion as I had made other changes which I would have had to redo after a download.