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.
I’m guessing that’s “stay gold ponyboy” , which is a play on the phrase “nothing gold can stay”. Johnny is trying to tell pony to stay true to himself and be good.
What is the topic of said essay? I 'd be happy to help.
B. "A way of thinking which interferes with objectivity" is the correct answer. A bias is prejudice in favor of or against one thing, person, or group compared with another, usually in a way considered to be unfair. So a bias definitely interferes with subjectivity.