A set of ideas about a group of people, such as "All Irishmen are drunks who beat their wives" or "All Arabs are terrorists," that then makes it seem natural and normal to discriminate against them is referred to as:

a. group racism.
b. institutional racism.
c. eugenics.
d. racist ideology.
e. fascism.

d. racist ideology

Explanation:

Racism are beliefs that all members of a group of people (race) have similar characteristics, abilities, or qualities, especially using it to distinguish as inferior or superior to another race or races and that someone social and moral traits as a result of his race.  Racism racism are usually based in social perceptions of biological differences between peoples and are normally used to for discrimination based on ethnicity or culture.  

you probably know the answer. stop asking stupid questions and making me waste my time. j.k. ; )   b.t.w. what are three ratios equivalent to 5 : 11? thx