C.) is the correct use of "who's." "Who's" is a contraction of who and is. In each sentence, instead of saying who's, say who is.
(ex. "Who is turn is it..." doesn't sound right.).
The other three sentences are incorrect; they need "whose" instead which is a <span>determiner or pronoun showing possession. </span>
Answer:
Participation in elections increases as education level increases across all age groups.a
It connects the book's ideas about early bicycle variations.
Poems that tell stories. Narrative poetry is a form of poetry that tells a story.
