Answer:
Correct answer is B. A preconceived opinion not based on reason or experience.
Step-by-step explanation:
B is the correct answer because prejudice is an opinion created without any relevant experience or knowledge to the persons or the groups that you have shaped your opinion on.
A can't be correct as prejudice doesn't have to mean that you are comparing someone.
C is not totally correct although prejudices can be misleading.
D is not correct as prejudice doesn't mean that you hate someone. That is mostly because you don't even know him.