The first suggestion for "calze" is "(you) are apt." What does that even mean? Also, it lists singular versions of both sock and stocking, whereas calze is plural.

Could also be: "I am my socks"

The Zanichelli Italian Dictionary lists two separate italian words for sock/socks: the feminine la calza, le calze, and the masculine il calzino, i calzini.

a really good response to "what are those"

Why stockings? Where is the right answer socks? Only singular form sock...

Why is 'they are my socks' incorrect?

I'm hearing her say, 'cal-chay' not cal-zay' or even 'cal-say'

SO if "calze" is plural how come "le mie" is correct, shouldn't it be "i miei"?

I also said "they are my socks" and it was correct...

Strange that socks and stockings are the same word, because they're really not the same item. I'm going to suggest "tights" as an alternative answer, which is the word I used for stockings and got wrong. But maybe there is a different word for tights, as they are also a little different to stockings, being joined at the top. ?

I thought sono was i am?

Pippi Calzelunghe !