The result showing that subjects are faster at categorizing common exemplars of a category than they are at categorizing uncommon exemplars of a category is known at the effect.

The answer is "typicality".

Explanation:

In this question, the typicality option is correct because this option in this situation shows the known result as the typicality effect, which describes the subject, which is quicker when classifying common topics of a classification than those at categorizing unusual examples of a category, that's why above choice is correct.

answer; (b) capitalism;