The correct answer is C. Prejudice
Step-by-step explanation:
The word prejudice refers to a false or incorrect idea which is often unfavorable about some person, group, situation or similar that is formed without reasons or knowledge and even before being in contact with it. Additionally, in most cases prejudices are linked to preconceived ideas related to people due to their religion, education, ethnicity, age, social class, beliefs, sexuality or any other characteristics that made people incorrectly evaluate and judge someone based on his or her characteristics or group membership. Considering the previous ideas, the word that completes the sentence is "prejudice" considering to have a "prejudice" is to judge a person before you know him or to have preconceived previous ideas about someone just based on their characteristics.