Which statement best describes prejudice?

Prejudice is best described as an opinion formed without just grounds or sufficient knowledge. This definition captures the essence of prejudice as it often arises from stereotypes or assumptions rather than factual understanding or familiarity with the individuals or groups in question. Prejudice can lead to unfair treatment and discrimination because it is based on incomplete information or irrational biases, rather than informed judgments.

In contrast to this definition, the other options represent concepts that require a deeper understanding or a factual basis. For instance, a judgment based on thorough knowledge implies a level of understanding that is contrary to the nature of prejudice. Similarly, a universally accepted belief about another race suggests a consensus that isn't necessarily linked to the individual perceptions that create prejudiced views. Lastly, an informed conclusion about a person's character indicates a careful assessment based on experience or evidence, which is fundamentally different from the impulsive or unfounded nature of prejudice. Thus, option B most accurately encapsulates what prejudice entails.