Is an unfair or unfounded attitude towards something.
a. judgement
b. opinion
c. bias
d. preference

bias

Explanation:

Bias is important to be recognized, as it is unfair and unfounded when doing research. An effort to avoid it will obtain neutrality and objectivity in research.

Bias makes measurements and observations more imprecise, or interpretation based, and can cause the information to lack foundations for gaining better knowledge.

The bias reflects as a person discriminates on a topic over others: the so-called selection bias.

When the information sources present an ideological tendency then we speak of information bias- Perhaps these are the most common sources of bias that often are present both in social science and in hard science, to a lesser extent-

answer; implicit memories explicit;