Della Welcome!
"Pumps, sandals, or mules" is the more advanced so great job trying to test us.
It's generally hard to have too many memories from ages before 5-8 (varies a bit from person to person). My oldest memories have me aware enough of some differences between the sexes. It was never quite an issue until my best friend started getting closer to her female friends, and I was left out. There are a lot of other times that I noticed the difference, but most of them were small incidents.
