C. Was
It says "my parents or my older sister". The last subject stated is "my older sister" which is singular. And the only choice that's singular is 'was'. So that should be the answer.
C. Integrity is the answer
I'm thinking B because my implies that the person possesses that thing. My bicycle. He is in possession of the bike
They are* instead of they is. And also blue* instead of blew.