(sic) is the abbreviation for the Latin phrase "sic erat scriptum" or "thus was it written".
It's used when quoting someone who made an error and you are quoting them verbatim. It's to let you're audience know that YOU know better, but the quoted source does not.
Example:
"It's to let you're (sic) audience know that YOU know better."
IDK what it stands for, but it's used where theres a mistake in a quote. It's the journalist saying "yes I know that's wrong but that's what the person reallg wrote".
I've heard that if you're nice to a journalist they'll tidy up minor issues like that, but if they don't like you they'll leave it incorrect and give you a [sic]