One historical example of the different-equals-deficit error is )men perceiving

The answer is: A) men perceiving women as intellectually inferior.

Explanation:

First and most important, men shouldn´t be considered more or less intelligent than women. No scientific study has ever been able to prove that statement, and men have tried many times to do so.

The term different equals deficit is referred to an erroneous belief that something that goes against what is considered normal is inferior or bad. People tend to believe that themselves, their country, their race, their gender, etc., are better than others just because of who they are.

So in this specific case, men tend to discriminate the intellectual capacity of women based on the sole fact that they are women and not men.