Figurative my dude just did the apex
I know he makes his money illegally. There’s no actual saying on what he does, it’s just known that it’s illegally
Each pronoun should agree with its antecedent in <span>number.
</span>For example: Jane bought the dress she liked.
She agrees with the antecedent Jane in number, they are both singular.
You wouldn't be able to say:
Jane bought the dress they liked.
<span>It wouldn't refer to the same antecedent.</span>