Which sentence correctly uses the possessive ‘whose’ rather than the contraction ‘who’s’?

Explanation

‘Whose’ is the possessive form used to ask who owns something, while ‘who’s’ is a contraction meaning ‘who is’ or ‘who has.’ Since the sentence asks about ownership of the book, the possessive form ‘whose’ is correct, and using ‘who’s’ would incorrectly turn the sentence into ‘who is book is this?’ Explore more English MCQs on mcqstutor to keep practicing.