C i already did this and I chose c and I got it right
7. It's, It is
8. There's, There is
9. Can't, Can not
10. What's, What is
11. Joe's, Joe is
12. He'll, He will
13. Shouldn't, Should not
14. They'd, They would
15. Where's, Where is
16. Bell's, Bell is
2+2=4 in my study's I found out it can not be 5 so there you go.
Were is the example because if on your paper I can see it so do I give a example or it in the paragraph