"A. You know, of course, that she used to dive for her college swim team." does not have any errors in comma usage. "Of course" is almost always surrounded by commas.
The answer is Boxes.
The plural of match is matches, funny isn't a noun so there's no plural form, and the plural of goose is geese, not gooses.
Personally i would rather take a 50% chance of winning €100 million because i’m already doing fine without the million, so if i don’t get any money it’s not big deal, so go big or go home
Best possible answer is he loves dough an hes rich so he can literally roll around in the dough if you catch my drift
