Out of the choices, I marked breathing under water too. But the best part of class for me was the last pool session. They had us swim around and work on our buoyancy. As we did, the instructors or TA would come along and undo parts of our gear, turn off our tanks, pull off our mask or things like that. We would have to stop and fix whatever they did. The best part I remember is setting on the bottom of the pool reattaching my tank, fixing my fin straps and clearing my mask because three of them had ganged up on me. It was just way too cool because I didnt get stressed at all and I could do everything without a problem. One thing I did learn that day is that your mask leaks when you grin like a big idiot.
Ber, your class sounds like a lot of fun too. I heard about an instructor who used to have the class doff and don all of their gear with their eyes shut. I haven't tried it yet, but it sounds like a good skill to have.
Ty