the way u would do this is as simple as "in and out"
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.
Mid-14c., "one whose profession is to plead cases in a court of justice," a technical term from Roman law, from Old French avocat "barrister, advocate, spokesman," from Latin advocatus "one called to aid; a pleader, advocate," noun use of past participle of advocare "to call" (as witness or advisor) from ad- "to" (see ...