Come on, Karoline, do your homework.
It should be easy enough to determine if you're talking about a him or a her.
If you don't know, the correct locution would be "him or her."
Hey, Grammar Police, cut some slack to our beautiful Karoline! She is not a Russian Troll feeding off Free Republic trough to be chastised for minor mistakes…
“Them” is acceptable in lieu of “him or her” if you don’t know. Though I do prefer “him or her” myself since it’s clearer (albeit wordier).
Yes. It’s pitiful how the English language is being massacred.