Let’s quickly clear up the difference between who’s and whose!
Who's is a contraction of who is or who has.
If you can replace it with “who is” or “who has,” then “who’s” is the right choice.
Whose is a possessive word — it shows that something belongs to someone.
Use “whose” when you’re talking about ownership or possession.
If you can replace the word with who is or who has, use who’s.
If that doesn’t work, then the correct word is whose.
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